Properly link flecs library

engine/breeze/world/map.c

@@ -71,6 +71,7 @@ static void createColliders(BzTileMap *map) {
     // Top-most layer takes priority
     for (i32 i = map->layerCount - 1; i >= 0; i--) {
         BzTileLayer *layer = map->layers + i;
+        if (!layer->data) continue;
         if (layer->tilesetIdx == -1) continue;
         BzTileset *tileset = map->tilesets + layer->tilesetIdx;
         for (i32 y = 0; y < map->height; y++) {