Fix Clang warnings

Do not hide virtual done() slot with done() signal.

Change-Id: Ic09439fdac2727f316f4a0983ffbd290f8555292
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/qmldesigner/components/componentcore/addsignalhandlerdialog.cpp

@@ -74,5 +74,5 @@ void AddSignalHandlerDialog::updateComboBox()
 void AddSignalHandlerDialog::handleAccepted()
 {
     m_signal = m_ui->comboBox->currentText();
-    emit done();
+    emit signalSelected();
 }

src/plugins/qmldesigner/components/componentcore/addsignalhandlerdialog.h

@@ -43,7 +43,7 @@ public:
     QString signal() const;
 
 signals:
-    void done();
+    void signalSelected();
 
 private:
     void updateComboBox();

src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp

@@ -695,7 +695,7 @@ void gotoImplementation(const SelectionContext &selectionState)
             AddSignalHandlerDialog *dialog = new AddSignalHandlerDialog(Core::ICore::dialogParent());
             dialog->setSignals(signalNames);
 
-            AddSignalHandlerDialog::connect(dialog, &AddSignalHandlerDialog::done, [=] {
+            AddSignalHandlerDialog::connect(dialog, &AddSignalHandlerDialog::signalSelected, [=] {
                 dialog->deleteLater();
 
                 if (dialog->signal().isEmpty())