CBLT-159:  fix error in SGW_PKGSTORE

Change-Id: I0da81e61504ff7b744bb3128b6e2090ce053dea5
Reviewed-on: http://review.couchbase.org/37926
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>