cid#1555404 silence Different smart pointers managing same raw pointer

Change-Id: I6de83a2209129745667e0d3f3768e87a226252e3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170320
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins

filter/source/xsltdialog/xmlfiltersettingsdialog.cxx

@@ -1090,9 +1090,8 @@ void XMLFilterSettingsDialog::initFilterList()
                 }
 
                 // add entry to internal container and to ui filter list box
-                maFilterVector.push_back( std::unique_ptr<filter_info_impl>(pTempFilter.get()) );
-                addFilterEntry( pTempFilter.release() );
-
+                maFilterVector.push_back(std::move(pTempFilter));
+                addFilterEntry(maFilterVector.back().get());
 
                 pTempFilter.reset( new filter_info_impl );
             }