Use bus_maybe_send_reply() where applicable

This is a followup to: commit 1a37b9b904

It will fix denial messages from dbus-daemon between gdm and
systemd-logind on logging into GNOME due to this.

See the previous commit for more details.

src/core/dbus-job.c

@@ -116,7 +116,7 @@ static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusConnection *connec
                 return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
         }
 
-        if (!dbus_connection_send(connection, reply, NULL))
+        if (!bus_maybe_send_reply(connection, message, reply))
                 return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
         return DBUS_HANDLER_RESULT_HANDLED;
@@ -185,7 +185,7 @@ static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBu
 
                         free(introspection);
 
-                        if (!dbus_connection_send(connection, reply, NULL))
+                        if (!bus_maybe_send_reply(connection, message, reply))
                                 goto oom;
 
                         return DBUS_HANDLER_RESULT_HANDLED;

src/core/dbus-manager.c

@@ -1894,7 +1894,7 @@ static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection,
         }
 
         if (reply)
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
         return DBUS_HANDLER_RESULT_HANDLED;

src/core/dbus-snapshot.c

@@ -77,7 +77,7 @@ DBusHandlerResult bus_snapshot_message_handler(Unit *u, DBusConnection *c, DBusM
                 return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
         }
 
-        if (!dbus_connection_send(c, reply, NULL))
+        if (!bus_maybe_send_reply(c, message, reply))
                 return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
         return DBUS_HANDLER_RESULT_HANDLED;

src/core/dbus-unit.c

@@ -582,7 +582,7 @@ static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *conn
         }
 
         if (reply)
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
         return DBUS_HANDLER_RESULT_HANDLED;
@@ -673,7 +673,7 @@ static DBusHandlerResult bus_unit_message_handler(DBusConnection *connection, DB
 
                         free(introspection);
 
-                        if (!dbus_connection_send(connection, reply, NULL))
+                        if (!bus_maybe_send_reply(connection, message, reply))
                                 goto oom;
 
                         return DBUS_HANDLER_RESULT_HANDLED;
@@ -886,7 +886,7 @@ DBusHandlerResult bus_unit_queue_job(
                             DBUS_TYPE_INVALID))
                 goto oom;
 
-        if (!dbus_connection_send(connection, reply, NULL))
+        if (!bus_maybe_send_reply(connection, message, reply))
                 goto oom;
 
         return DBUS_HANDLER_RESULT_HANDLED;

src/core/dbus.c

@@ -406,7 +406,7 @@ static DBusHandlerResult api_bus_message_filter(DBusConnection *connection, DBus
         dbus_error_free(&error);
 
         if (reply) {
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
                 dbus_message_unref(reply);

src/hostname/hostnamed.c

@@ -605,7 +605,7 @@ static DBusHandlerResult hostname_message_handler(
         if (!reply)
                 goto oom;
 
-        if (!dbus_connection_send(connection, reply, NULL))
+        if (!bus_maybe_send_reply(connection, message, reply))
                 goto oom;
 
         dbus_message_unref(reply);

src/locale/localed.c

@@ -1277,7 +1277,7 @@ static DBusHandlerResult locale_message_handler(
         if (!(reply = dbus_message_new_method_return(message)))
                 goto oom;
 
-        if (!dbus_connection_send(connection, reply, NULL))
+        if (!bus_maybe_send_reply(connection, message, reply))
                 goto oom;
 
         dbus_message_unref(reply);

src/login/logind-seat-dbus.c

@@ -310,7 +310,7 @@ static DBusHandlerResult seat_message_dispatch(
         }
 
         if (reply) {
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
                 dbus_message_unref(reply);

src/login/logind-session-dbus.c

@@ -412,7 +412,7 @@ static DBusHandlerResult session_message_dispatch(
         }
 
         if (reply) {
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
                 dbus_message_unref(reply);

src/login/logind-user-dbus.c

@@ -304,7 +304,7 @@ static DBusHandlerResult user_message_dispatch(
         }
 
         if (reply) {
-                if (!dbus_connection_send(connection, reply, NULL))
+                if (!bus_maybe_send_reply(connection, message, reply))
                         goto oom;
 
                 dbus_message_unref(reply);

src/timedate/timedated.c

@@ -889,7 +889,7 @@ static DBusHandlerResult timedate_message_handler(
         if (!(reply = dbus_message_new_method_return(message)))
                 goto oom;
 
-        if (!dbus_connection_send(connection, reply, NULL))
+        if (!bus_maybe_send_reply(connection, message, reply))
                 goto oom;
 
         dbus_message_unref(reply);