Description: Fix various memory leaks
 This commit contains three patches that was done in one upstream pull request
 but the commits weren't squashed. The commit descriptions are as follows:
 - mainmenu: Fix possible leaks in menu-cache usage
 - mount: Fix leak by correctly assigning the QObject parent
 - taskbar: Avoid conditionals on unintialized values by proper initialization
   of data members
Author: Palo Kisa <palo.kisa@gmail.com>
Origin: backport
Bug: https://github.com/lxde/lxqt/issues/1415
Applied-Upstream: commit:04630d4, commit:d1bd23f, commit:1cb5778
Last-Update: 2018-02-05
--- a/plugin-mainmenu/xdgcachedmenu.cpp
+++ b/plugin-mainmenu/xdgcachedmenu.cpp
@@ -33,6 +33,7 @@
 #include <QHelpEvent>
 #include <QMimeData>
 #include <QDebug>
+#include <memory>
 
 XdgCachedMenuAction::XdgCachedMenuAction(MenuCacheItem* item, QObject* parent):
     QAction{parent}
@@ -92,7 +93,10 @@ void XdgCachedMenu::addMenuItems(QMenu*
   GSList* list = menu_cache_dir_list_children(dir);
   for(GSList * l = list; l; l = l->next)
   {
-    MenuCacheItem* item = (MenuCacheItem*)l->data;
+    // Note: C++14 is needed for usage of the std::make_unique
+    //auto guard = std::make_unique(static_cast<MenuCacheItem *>(l->data), menu_cache_item_unref);
+    std::unique_ptr<MenuCacheItem, gboolean (*)(MenuCacheItem* item)> guard{static_cast<MenuCacheItem *>(l->data), menu_cache_item_unref};
+    MenuCacheItem* item = guard.get();
     MenuCacheType type = menu_cache_item_get_type(item);
 
     if(type == MENU_CACHE_TYPE_SEP)
@@ -123,7 +127,6 @@ void XdgCachedMenu::addMenuItems(QMenu*
         addMenuItems(submenu, MENU_CACHE_DIR(item));
       }
     }
-    menu_cache_item_unref(item);
   }
   if (list)
       g_slist_free(list);
--- a/plugin-mount/actions/deviceaction.cpp
+++ b/plugin-mount/actions/deviceaction.cpp
@@ -42,8 +42,9 @@
 #define ACT_INFO_UPPER      QString(ACT_INFO).toUpper()
 #define ACT_MENU_UPPER      QString(ACT_MENU).toUpper()
 
-DeviceAction::DeviceAction(LXQtMountPlugin *plugin, QObject *parent):
-    mPlugin(plugin)
+DeviceAction::DeviceAction(LXQtMountPlugin *plugin, QObject *parent)
+    : QObject(parent)
+    , mPlugin(plugin)
 {
 }
 
--- a/plugin-mount/lxqtmountplugin.cpp
+++ b/plugin-mount/lxqtmountplugin.cpp
@@ -74,7 +74,7 @@ void LXQtMountPlugin::settingsChanged()
     if (mDeviceAction == nullptr || mDeviceAction->Type() != actionId)
     {
         delete mDeviceAction;
-        mDeviceAction = DeviceAction::create(actionId, this);
+        mDeviceAction = DeviceAction::create(actionId, this, this);
 
         connect(mPopup, &Popup::deviceAdded, mDeviceAction, &DeviceAction::onDeviceAdded);
         connect(mPopup, &Popup::deviceRemoved, mDeviceAction, &DeviceAction::onDeviceRemoved);
--- a/plugin-taskbar/lxqttaskbar.cpp
+++ b/plugin-taskbar/lxqttaskbar.cpp
@@ -58,6 +58,8 @@ LXQtTaskBar::LXQtTaskBar(ILXQtPanelPlugi
     QFrame(parent),
     mSignalMapper(new QSignalMapper(this)),
     mButtonStyle(Qt::ToolButtonTextBesideIcon),
+    mButtonWidth(400),
+    mButtonHeight(100),
     mCloseOnMiddleClick(true),
     mRaiseOnCurrentDesktop(true),
     mShowOnlyOneDesktopTasks(false),
@@ -65,6 +67,7 @@ LXQtTaskBar::LXQtTaskBar(ILXQtPanelPlugi
     mShowOnlyCurrentScreenTasks(false),
     mShowOnlyMinimizedTasks(false),
     mAutoRotate(true),
+    mGroupingEnabled(true),
     mShowGroupOnHover(true),
     mIconByClass(false),
     mCycleOnWheelScroll(true),