Added modified patch from AC

- don't remove color and font when the last char is deleted from the chat text entry box

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@5095 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/chat/ChatWidget.h

@@ -98,6 +98,7 @@ protected:
 private slots:
 	void pasteLink();
 	void contextMenu(QPoint);
+	void chatCharFormatChanged();
 
 	void fileHashingFinished(QList<HashedFile> hashedFiles);
 
@@ -149,6 +150,7 @@ private:
 	RSStyle style;
 
 	bool firstShow;
+	bool inChatCharFormatChanged;
 
 	Ui::ChatWidget *ui;
 };