Follow up r15701 added missing db_destroy for memory stuff.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15702 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/guild.c

@@ -1968,5 +1968,6 @@ void do_init_guild(void)
 void do_final_guild(void) {
 	db_destroy(guild_db);
 	castle_db->destroy(castle_db,guild_castle_db_final);
+	db_destroy(guild_expcache_db);
 	guild_infoevent_db->destroy(guild_infoevent_db,eventlist_db_final);
 }