Fix buddy list not syncing properly

I couldn't reproduce this on my public server, but the list would show up empty sometimes on initial login on my local server, so I threw it in for good measure.

src/Player.hpp

@@ -71,5 +71,6 @@ struct Player {
 
     bool notify;
 
+    bool buddiesSynced;
     int64_t buddyIDs[50];
 };