From 2ee911312cf1793361aac48fb016a63161197516 Mon Sep 17 00:00:00 2001
From: zephyrus <zephyrus@54d463be-8e91-2dee-dedb-b68131a5f0ec>
Date: Fri, 17 Apr 2009 22:59:41 +0000
Subject: - Critical crash fix. Please update your servers.

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@13678 54d463be-8e91-2dee-dedb-b68131a5f0ec
---
 src/map/clif.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/map/clif.c b/src/map/clif.c
index 61db7f26e..abc782b49 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -9796,6 +9796,9 @@ void clif_parse_NpcStringInput(int fd, struct map_session_data* sd)
 	int message_len = RFIFOW(fd,2)-8;
 	int npcid = RFIFOL(fd,4);
 	const char* message = (char*)RFIFOP(fd,8);
+	
+	if( message_len < 0 )
+		message_len = 0;
 
 	safestrncpy(sd->npc_str, message, min(message_len,CHATBOX_SIZE));
 	npc_scriptcont(sd, npcid);
-- 
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