-Werror,-Wunused-variable

...since 286e2f5c6e "Related fdo#82953: Forget
package URL of image after it is loaded"

Change-Id: If4cc941353b72f555dee26d158aee7b15b359a9c

svx/source/svdraw/svdograf.cxx

@@ -1347,8 +1347,6 @@ IMPL_LINK( SdrGrafObj, ImpSwapHdl, GraphicObject*, pO )
                         aGraphic, aUserData, *pStream,
                         GRFILTER_FORMAT_DONTKNOW, NULL, 0, pFilterData.get()))
                     {
-                        const OUString aNewUserData( pGraphic->GetUserData() );
-
                         pGraphic->SetGraphic( aGraphic );
                         pGraphic->SetUserData();