fix infitite looping in resolver

...this time for real ...hopefully :)

fixup of 870f2174d5

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>

src/resolver.c

@@ -322,7 +322,7 @@ static unsigned message_name_get(const unsigned char *buf,
                 return 0;
             pointer = (label_len & 0x3f) << 8 | buf[i++];
             /* Prevent infinite looping */
-            if (pointer == buf_offset)
+            if (pointer >= buf_offset)
                 return 0;
             if (name != NULL && name_len >= name_max && name_max > 0) {
                 /* We have filled the name buffer. Don't pass it recursively. */