reduce scope of var

Change-Id: If9f4974fa1bf664b14c81e243f7dcd36abd3a1ce
Reviewed-on: https://gerrit.libreoffice.org/45061Tested-by: Stephan Bergmann <sbergman@redhat.com>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

sw/source/core/unocore/unoframe.cxx

@@ -1650,7 +1650,6 @@ void SwXFrame::setPropertyValue(const OUString& rPropertyName, const ::uno::Any&
             Graphic aGraphic;
             if( bURL )
             {
-                std::unique_ptr<GraphicObject> pGrfObj;
                 OUString aGrfUrl;
                 aValue >>= aGrfUrl;
 
@@ -1662,7 +1661,7 @@ void SwXFrame::setPropertyValue(const OUString& rPropertyName, const ::uno::Any&
                     OString sId(OUStringToOString(
                         aGrfUrl.copy(sizeof(sGraphicObjectProtocol)-1),
                         RTL_TEXTENCODING_ASCII_US));
-                    pGrfObj = o3tl::make_unique<GraphicObject>( sId );
+                    auto pGrfObj = o3tl::make_unique<GraphicObject>( sId );
                     aGraphic = pGrfObj->GetGraphic();
                     bApply = true;
                 }