loplugin:useuniqueptr in MediaFloater

Change-Id: Ibdf838b630fdd63f549b59f69ee05c2030326fa5
Reviewed-on: https://gerrit.libreoffice.org/54175Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

avmedia/source/framework/mediaplayer.cxx

@@ -74,8 +74,7 @@ void MediaFloater::dispose()
         Show(false, ShowFlags::NoFocusChange);
         SetFloatingMode(false);
     }
-    delete mpMediaWindow;
-    mpMediaWindow = nullptr;
+    mpMediaWindow.reset();
     SfxDockingWindow::dispose();
 }
 
@@ -93,15 +92,14 @@ void MediaFloater::ToggleFloatingMode()
 
     if (mpMediaWindow)
         mpMediaWindow->updateMediaItem( aRestoreItem );
-    delete mpMediaWindow;
-    mpMediaWindow = nullptr;
+    mpMediaWindow.reset();
 
     SfxDockingWindow::ToggleFloatingMode();
 
     if (isDisposed())
         return;
 
-    mpMediaWindow = new MediaWindow( this, true );
+    mpMediaWindow.reset( new MediaWindow( this, true ) );
 
     mpMediaWindow->setPosSize( tools::Rectangle( Point(), GetOutputSizePixel() ) );
     mpMediaWindow->executeMediaItem( aRestoreItem );

include/avmedia/mediaplayer.hxx

@@ -24,6 +24,7 @@
 #include <sfx2/dockwin.hxx>
 #include <sfx2/viewfrm.hxx>
 #include <avmedia/avmediadllapi.h>
+#include <memory>
 
 namespace avmedia
 {
@@ -56,7 +57,7 @@ private:
     virtual void            Resize() override;
     virtual void            ToggleFloatingMode() override;
 
-    MediaWindow*            mpMediaWindow;
+    std::unique_ptr<MediaWindow> mpMediaWindow;
 };
 
 inline MediaFloater * getMediaFloater() {