Yet another fix to r13503 - dangling player chatroom pointer in id_db (bugreport:2750).

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@13508 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/chat.c

@@ -176,6 +176,7 @@ int chat_leavechat(struct map_session_data* sd, bool kicked)
 		clif_clearchat(cd, 0);
 		map_delblock(&cd->bl);
 		map_freeblock(&cd->bl);
+		map_deliddb(&cd->bl);
 		return 1;
 	}