basic/signal-util: drop unnecessary parens

src/basic/signal-util.c

@@ -26,7 +26,7 @@ int reset_all_signal_handlers(void) {
 
                 /* On Linux the first two RT signals are reserved by
                  * glibc, and sigaction() will return EINVAL for them. */
-                if ((sigaction(sig, &sa, NULL) < 0))
+                if (sigaction(sig, &sa, NULL) < 0)
                         if (errno != EINVAL && r >= 0)
                                 r = -errno;
         }