rb_hash_delete() function could incorrectly detect block presence
rb_hash_delete() function could incorrectly detect block presence

Fix: send the message to hash object instead calling API function

Change-Id: Ic57df7288e4a098380c3de6927faf6e0842ca57f
Reviewed-on: http://review.couchbase.org/18540
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Chris Anderson <2d93822289c316cb3d36491aa561290e86ec1ac5@couchbase.com>

dewolfe/couchbase-ruby-client,dewolfe/couchbase-ruby-client