loplugin:useuniqueptr in SdLayerManager

Change-Id: I95c17965e7de1daf0b548220326e05371b71b1ae
Reviewed-on: https://gerrit.libreoffice.org/56336
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sd/source/ui/unoidl/unolayer.cxx

@@ -415,7 +415,7 @@ void SAL_CALL SdLayer::removeEventListener( const uno::Reference< lang::XEventLi
 SdLayerManager::SdLayerManager( SdXImpressDocument& rMyModel ) throw()
 :mpModel( &rMyModel)
 {
-    mpLayers = new SvUnoWeakContainer;
+    mpLayers.reset(new SvUnoWeakContainer);
 }
 
 SdLayerManager::~SdLayerManager() throw()
@@ -433,9 +433,7 @@ void SAL_CALL SdLayerManager::dispose(  )
     if( mpLayers )
     {
         mpLayers->dispose();
-
-        delete mpLayers;
-        mpLayers = nullptr;
+        mpLayers.reset();
     }
 }
 

sd/source/ui/unoidl/unolayer.hxx

@@ -165,7 +165,7 @@ public:
 
 private:
     SdXImpressDocument* mpModel;
-    SvUnoWeakContainer* mpLayers;
+    std::unique_ptr<SvUnoWeakContainer> mpLayers;
 
     ::sd::View* GetView() const throw();
     ::sd::DrawDocShell* GetDocShell() const throw() { return mpModel->mpDocShell; }