server: Reorganize some requests to avoid padding, and make remaining padding explicit.
diff --git a/server/queue.c b/server/queue.c
index 697a268..ab524a7 100644
--- a/server/queue.c
+++ b/server/queue.c
@@ -1723,6 +1723,7 @@
         release_object( thread );
         return;
     }
+    memset( data, 0, sizeof(*data) );
     data->x    = req->x;
     data->y    = req->y;
     data->info = req->info;