fix for typing another key in chat before releasing enter key causing it to send the message

main/source/ui/ChatPanel.cpp

@@ -242,6 +242,8 @@ void ChatPanel::KeyEvent(int iKeydown)
 		}
 	}
 	if (state[SDL_SCANCODE_RETURN])
+	{
+        if (iKeydown && !bTextinput)
         {
             std::string theCommand;
 
@@ -271,3 +273,4 @@ void ChatPanel::KeyEvent(int iKeydown)
             CancelChat();
         }
 	}
+}