coverity#1433648 Unchecked return value

Change-Id: I11a60e5c6f7728fd47dbb461004622a99f055b16
Reviewed-on: https://gerrit.libreoffice.org/52060Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sc/source/filter/xml/xmldrani.cxx

@@ -444,7 +444,7 @@ void SAL_CALL ScXMLDatabaseRangeContext::endFastElement( sal_Int32 /*nElement*/
         if (pData.get())
         {
             setAutoFilterFlags(*pDoc, *pData);
-            pDoc->GetDBCollection()->getNamedDBs().insert(pData.release());
+            (void)pDoc->GetDBCollection()->getNamedDBs().insert(pData.release());
         }
     }
 }