Close any open dialog when sdrangel quits

plugins/feature/map/mapbeacondialog.cpp

@@ -31,6 +31,7 @@ MapBeaconDialog::MapBeaconDialog(MapGUI *gui, QWidget* parent) :
     ui(new Ui::MapBeaconDialog)
 {
     ui->setupUi(this);
+    setAttribute(Qt::WA_QuitOnClose, false);
     connect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &MapBeaconDialog::downloadFinished);
 }
 

plugins/feature/map/mapibpbeacondialog.cpp

@@ -30,6 +30,7 @@ MapIBPBeaconDialog::MapIBPBeaconDialog(MapGUI *gui, QWidget* parent) :
     ui(new Ui::MapIBPBeaconDialog)
 {
     ui->setupUi(this);
+    setAttribute(Qt::WA_QuitOnClose, false);
     connect(&m_timer, &QTimer::timeout, this, &MapIBPBeaconDialog::updateTime);
     m_timer.setInterval(1000);
     ui->beacons->setRowCount(IBPBeacon::m_frequencies.size());

plugins/feature/map/mapradiotimedialog.cpp

@@ -29,6 +29,7 @@ MapRadioTimeDialog::MapRadioTimeDialog(MapGUI *gui, QWidget* parent) :
     ui(new Ui::MapRadioTimeDialog)
 {
     ui->setupUi(this);
+    setAttribute(Qt::WA_QuitOnClose, false);
     // Don't call updateTable until m_gui->getAzEl() will return valid location
 }