missed jqXhr argument in error response of /settings/indexes POST
missed jqXhr argument in error response of /settings/indexes POST

Change-Id: I3b085ccfe4f47089bed4da123a16a4659e5e6302
Reviewed-on: http://review.couchbase.org/53794
Tested-by: Pavel Blagodov <596b71e626fc58dbdad141b817770e3e4810bb9b@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server