- Fixed client not validating the chat-kick-request packet, which can cause crashes.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@9243 54d463be-8e91-2dee-dedb-b68131a5f0ec

Changelog-Trunk.txt

@@ -4,6 +4,8 @@ AS OF SVN REV. 5091, WE ARE NOW USING TRUNK.  ALL UNTESTED BUGFIXES/FEATURES GO
 IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
 
 2006/11/17
+	* Fixed client not validating the chat-kick-request packet, which can cause
+	  crashes. [Skotlex]
 	* Updated map_quit to handle removing of players who are not even
 	  authenticated yet. [Skotlex]
 	* New connection requests are now also blocked when there's a player

src/map/chat.c

@@ -257,6 +257,8 @@ int chat_kickchat(struct map_session_data *sd,char *kickusername)
 
 	cd = (struct chat_data *)map_id2bl(sd->chatID);
 	
+	if (!cd) return -1;
+
 	for(i = 0; i < cd->users; i++) {
 		if (strcmp(cd->usersd[i]->status.name, kickusername) == 0) {
 			if (battle_config.gm_kick_chat && pc_isGM(cd->usersd[i]) >= battle_config.gm_kick_chat)