Wizard: Avoid cert dialog multiple connection

This could lead to odd behavior when slotCertificateAccepted
was called multiple times.

src/gui/wizard/owncloudsetuppage.cpp

@@ -68,6 +68,7 @@ OwncloudSetupPage::OwncloudSetupPage(QWidget *parent)
     connect(_ui.leUrl, &QLineEdit::editingFinished, this, &OwncloudSetupPage::slotUrlEditFinished);
 
     addCertDial = new AddCertificateDialog(this);
+    connect(addCertDial, &QDialog::accepted, this, &OwncloudSetupPage::slotCertificateAccepted);
 
 #ifdef WITH_PROVIDERS
     connect(_ui.loginButton, &QPushButton::clicked, this, &OwncloudSetupPage::slotLogin);
@@ -319,7 +320,6 @@ void OwncloudSetupPage::setErrorString(const QString &err, bool retryHTTPonly)
                 } break;
                 case OwncloudConnectionMethodDialog::Client_Side_TLS:
                     addCertDial->show();
-                    connect(addCertDial, &QDialog::accepted, this, &OwncloudSetupPage::slotCertificateAccepted);
                     break;
                 case OwncloudConnectionMethodDialog::Closed:
                 case OwncloudConnectionMethodDialog::Back: