[12079] Remove some redundant explicit NULL checks for pointers before delete or delete[] calls since this check is done implicitly when deleting

Signed-off-by: stfx <stfx@hotmail.de>

src/game/Chat.cpp

@@ -976,7 +976,7 @@ void ChatHandler::SendSysMessage(const char* str)
         m_session->SendPacket(&data);
     }
 
-    delete [] buf;
+    delete[] buf;
 }
 
 void ChatHandler::SendGlobalSysMessage(const char* str)
@@ -994,7 +994,7 @@ void ChatHandler::SendGlobalSysMessage(const char* str)
         sWorld.SendGlobalMessage(&data);
     }
 
-    delete [] buf;
+    delete[] buf;
 }
 
 void ChatHandler::SendSysMessage(int32 entry)