loplugin:useuniqueptr in SwXViewSettings

Change-Id: I29c70ad5b6d5e120d8dc709d279407d3100373b7
Reviewed-on: https://gerrit.libreoffice.org/57948
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sw/source/uibase/inc/unomod.hxx

@@ -102,7 +102,7 @@ class SwXViewSettings final : public comphelper::ChainablePropertySet
     friend class SwXDocumentSettings;
 
     SwView*                     pView;
-    SwViewOption*       mpViewOption;
+    std::unique_ptr<SwViewOption> mpViewOption;
     const SwViewOption*         mpConstViewOption;
     bool                    bObjectValid:1, mbApplyZoom;
 

sw/source/uibase/uno/unomod.cxx

@@ -552,7 +552,7 @@ void SwXViewSettings::_preSetValues ()
     else
         pVOpt = SW_MOD()->GetViewOption(false);
 
-    mpViewOption = new SwViewOption (*pVOpt);
+    mpViewOption.reset( new SwViewOption (*pVOpt) );
     mbApplyZoom = false;
     if(pView)
         mpViewOption->SetStarOneSetting(true);
@@ -782,8 +782,7 @@ void SwXViewSettings::_postSetValues()
     SW_MOD()->ApplyUsrPref( *mpViewOption, pView, pView ? SvViewOpt::DestViewOnly
                                                   : SvViewOpt::DestText );
 
-    delete mpViewOption;
-    mpViewOption = nullptr;
+    mpViewOption.reset();
 }
 
 void SwXViewSettings::_preGetValues ()