don't try to parse response when return code is 404
don't try to parse response when return code is 404

Signed-off-by: Corentin Chary <298d22bb5b8e08c296f77ec9e7162462cf47b8a1@iksaif.net>

harmattan/meedav,iksaif/qwebdav,iksaif/qwebdav,harmattan/meedav