Core: cleanup.

*remove some garbage
*little bit moore const func
*fix process of args in vmap3_extractor

src/server/game/Chat/Chat.h

@@ -119,7 +119,7 @@ class ChatHandler
 
         GameObject* GetNearbyGameObject();
         GameObject* GetObjectGlobalyWithGuidOrNearWithDbGuid(uint32 lowguid, uint32 entry);
-        bool HasSentErrorMessage() { return sentErrorMessage;}
+        bool HasSentErrorMessage() const { return sentErrorMessage;}
         void SetSentErrorMessage(bool val){ sentErrorMessage = val;};
         static bool LoadCommandTable() { return load_command_table;}
         static void SetLoadCommandTable(bool val){ load_command_table = val;};

src/server/game/Chat/Commands/Level3.cpp

@@ -4208,8 +4208,6 @@ bool ChatHandler::HandleServerSetMotdCommand(const char *args)
 /// Set whether we accept new clients
 bool ChatHandler::HandleServerSetClosedCommand(const char *args)
 {
-    std::string arg = args;
-
     if (strncmp(args, "on", 3) == 0)
     {
         SendSysMessage(LANG_WORLD_CLOSED);