Log correct error during memd close error.
Log correct error during memd close error.

Change-Id: Ie74e2421c320e75300dff8b920a5cfe85b071a4e
Reviewed-on: http://review.couchbase.org/75886
Reviewed-by: Mark Nunberg <dab05a0fe859c5cb93882b2a75a0d613501b07be@couchbase.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

brett19/gocbcore