loplugin:passstuffbyref improved return in emfio,writerfilter

Change-Id: I237936d62d0f1b17574dd88b5c9de932dc03238e
Reviewed-on: https://gerrit.libreoffice.org/47214Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

compilerplugins/clang/passstuffbyref.cxx

@@ -250,7 +250,8 @@ void PassStuffByRef::checkReturnValue(const FunctionDecl * functionDecl, const C
         || (dc.MemberFunction().Class("Submission").Namespace("xforms")
             .GlobalNamespace())
         || (dc.Function("TopLeft").Class("SwRect").GlobalNamespace())
-        || (dc.Function("ConvDicList_CreateInstance").GlobalNamespace()))
+        || (dc.Function("ConvDicList_CreateInstance").GlobalNamespace())
+        || (dc.Function("Create").Class("OUnoAutoPilot").Namespace("dbp").GlobalNamespace()))
     {
         return;
     }
@@ -349,6 +350,9 @@ bool PassStuffByRef::isReturnExprDisqualified(const Expr* expr)
         if (isa<CXXBindTemporaryExpr>(expr)) {
             return true;
         }