From 293ccc1faf680699bc0a1e358cd39e3bc8c92733 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefano=20Borz=C3=AC?= <stefanoborzi32@gmail.com>
Date: Sat, 16 Nov 2019 18:44:06 +0100
Subject: [PATCH] fix(Core): uint32 assignment, prevent crash, closes #2433
 (#2435)

* Fixed uint32 assignment, prevent crash

* Improved code quality
---
 src/server/game/Chat/ChatLink.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server/game/Chat/ChatLink.cpp b/src/server/game/Chat/ChatLink.cpp
index 296115fef..6a36a7ecb 100644
--- a/src/server/game/Chat/ChatLink.cpp
+++ b/src/server/game/Chat/ChatLink.cpp
@@ -333,7 +333,7 @@ bool SpellChatLink::ValidateName(char* buffer, const char* context)
             {
                 // found the prefix, remove it to perform spellname validation below
                 // -2 = strlen(": ")
-                uint32 spellNameLength = strlen(buffer) - skillLineNameLength - 2;
+                uint32 spellNameLength = (strlen(buffer) <= skillLineNameLength + 2) ? 0 : strlen(buffer) - skillLineNameLength - 2;
                 memmove(buffer, buffer + skillLineNameLength + 2, spellNameLength + 1);
                 break;
             }