...where FunctionDecl::getReturnTypeSourceRange returns an invalid range because
it fails to take AttributedTypeLoc (as caused by SAL_CALL -> __cdecl) into
account.

Change-Id: I7835dfca7b890ba1bfdb99adaad78a627b6e0e17
Reviewed-on: https://gerrit.libreoffice.org/45909Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>