handling incorrect captcha and check not found cases

solvecaptchadialog.h

@@ -12,7 +12,7 @@ class SolveCaptchaDialog : public QDialog
     Q_OBJECT
 
 public:
-    explicit SolveCaptchaDialog(QWidget *parent = nullptr);
+    explicit SolveCaptchaDialog(QWidget *parent = nullptr, std::string* = nullptr)  ;
     ~SolveCaptchaDialog();
 
 
@@ -22,6 +22,7 @@ signals:
 
 private:
     Ui::SolveCaptchaDialog *ui;
+    std::string* solved_captcha;
 
 private slots:
     void accept() override;