fix: sign over char limit crash

Minecraft.World/SignTileEntity.cpp

@@ -167,8 +167,12 @@ void SignTileEntity::setChanged()
 
 void SignTileEntity::SetMessage(int iIndex,wstring &wsText) 
 { 
+	//str1kk3r - if we go over 15 chars, then cut it down to just 15
+	if (wsText.length() > MAX_LINE_LENGTH)
+	{
+		 wsText = wsText.substr(0, MAX_LINE_LENGTH);
+	}
 	m_wsmessages[iIndex]=wsText;
-
 }
 
 // 4J-PB - added for string verification