loplugin:useuniqueptr in SwSdrUndo

Change-Id: I67276f2cd13cce8a7cb047216ead40c5afc384bd
Reviewed-on: https://gerrit.libreoffice.org/57423
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sw/source/core/inc/UndoDraw.hxx

@@ -36,8 +36,8 @@ class SwDoc;
 // Undo for Draw Objects
 class SwSdrUndo : public SwUndo
 {
-    SdrUndoAction* pSdrUndo;
-    SdrMarkList* pMarkList; // MarkList for all selected SdrObjects
+    std::unique_ptr<SdrUndoAction> pSdrUndo;
+    std::unique_ptr<SdrMarkList> pMarkList; // MarkList for all selected SdrObjects
 
 public:
     SwSdrUndo( SdrUndoAction* , const SdrMarkList* pMarkList, const SwDoc* pDoc );

sw/source/core/undo/undraw.cxx

@@ -75,27 +75,25 @@ SwSdrUndo::SwSdrUndo( SdrUndoAction* pUndo, const SdrMarkList* pMrkLst, const Sw
     : SwUndo( SwUndoId::DRAWUNDO, pDoc ), pSdrUndo( pUndo )
 {
     if( pMrkLst && pMrkLst->GetMarkCount() )
-        pMarkList = new SdrMarkList( *pMrkLst );
-    else
-        pMarkList = nullptr;
+        pMarkList.reset( new SdrMarkList( *pMrkLst ) );
 }
 
 SwSdrUndo::~SwSdrUndo()
 {
-    delete pSdrUndo;
-    delete pMarkList;
+    pSdrUndo.reset();
+    pMarkList.reset();
 }
 
 void SwSdrUndo::UndoImpl(::sw::UndoRedoContext & rContext)
 {
     pSdrUndo->Undo();
-    rContext.SetSelections(nullptr, pMarkList);
+    rContext.SetSelections(nullptr, pMarkList.get());
 }
 
 void SwSdrUndo::RedoImpl(::sw::UndoRedoContext & rContext)
 {
     pSdrUndo->Redo();
-    rContext.SetSelections(nullptr, pMarkList);
+    rContext.SetSelections(nullptr, pMarkList.get());
 }
 
 OUString SwSdrUndo::GetComment() const