debugger: also save the new qt source location settings

src/plugins/debugger/commonoptionspage.cpp

@@ -126,7 +126,8 @@ QWidget *CommonOptionsPage::createPage(QWidget *parent)
     m_group.insert(debuggerCore()->action(VerboseLog), 0);
     m_group.insert(debuggerCore()->action(BreakOnThrow), 0);
     m_group.insert(debuggerCore()->action(BreakOnCatch), 0);
-    m_group.insert(debuggerCore()->action(QtSourcesLocation), 0);
+    m_group.insert(debuggerCore()->action(QtSourcesLocation),
+        m_ui.qtSourcesChooser);
 #ifdef Q_OS_WIN
     Utils::SavedAction *registerAction = debuggerCore()->action(RegisterForPostMortem);
     m_group.insert(registerAction,