Minor stylistic tweak to message parser.

message.c

@@ -405,14 +405,13 @@ parse_packet(const unsigned char *from, struct network *net,
                    type, format_address(from), net->ifname);
         }
     done:
-
         i += len + 2;
         continue;
 
     fail:
         fprintf(stderr, "Couldn't parse packet (%d %d).\n",
                 message[0], message[1]);
-        i += len + 2;
+        goto done;
     }
     return;
 }