cleanup: address review feedback from claude

Trivial ordering/modernizing change that got highlighted by
claude and refined by keszybz to move to the modern systemd
style.

Thanks to keszybz for suggesting this.

src/import/qcow2-util.c

@@ -154,9 +154,7 @@ static int normalize_offset(
         POINTER_MAY_BE_NULL(compressed);
         POINTER_MAY_BE_NULL(compressed_size);
 
-        uint64_t q;
-
-        q = be64toh(p);
+        uint64_t q = be64toh(p);
 
         if (q & QCOW2_COMPRESSED) {
                 uint64_t sz, csize_shift, csize_mask;

src/resolve/resolved-dns-stub.c

@@ -83,9 +83,7 @@ int dns_stub_listener_extra_new(
 
         assert(ret);
 
-        DnsStubListenerExtra *l;
-
-        l = new(DnsStubListenerExtra, 1);
+        DnsStubListenerExtra *l = new(DnsStubListenerExtra, 1);
         if (!l)
                 return -ENOMEM;