Qt: Reload widgets using prefs when reloading Lua plugins

Widgets using prefs must be closed because the prefs may have
been free'd when reloading Lua plugins.

Change-Id: I4b79b7aff18d7923c77a9eb05acadc29b156edbf
Reviewed-on: https://code.wireshark.org/review/10108
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

ui/qt/main_window_slots.cpp

@@ -2482,6 +2482,10 @@ void MainWindow::on_actionAnalyzeReloadLuaPlugins_triggered()
     funnel_statistics_reload_menus();
     reloadDynamicMenus();
 
+    // Preferences may have been deleted so close all widgets using prefs
+    proto_tree_->closeContextMenu();
+    main_ui_->preferenceEditorFrame->animatedHide();
+
     char *gdp_path, *dp_path;
     (void) wsApp->readConfigurationFiles(&gdp_path, &dp_path);
 

ui/qt/proto_tree.cpp

@@ -274,6 +274,11 @@ ProtoTree::ProtoTree(QWidget *parent) :
             this, SIGNAL(editProtocolPreference(preference*,pref_module*)));
 }
 
+void ProtoTree::closeContextMenu()
+{
+    ctx_menu_.close();
+}
+
 void ProtoTree::clear() {
     updateSelectionStatus(NULL);
     QTreeWidget::clear();

ui/qt/proto_tree.h

@@ -42,6 +42,7 @@ public:
     void fillProtocolTree(proto_tree *protocol_tree);
     void emitRelatedFrame(int related_frame, ft_framenum_type_t framenum_type = FT_FRAMENUM_NONE);
     void goToField(int hf_id);
+    void closeContextMenu();
     void clear();
 
 protected: