Fix the error message thrown from storing too big item
Fix the error message thrown from storing too big item

Change-Id: I47dfffede1a73bdfdc5e7edd319e574a46eb5dc2
Reviewed-on: http://review.couchbase.org/23016
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>

couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase