PCBC-395 fix condition in bool type assertion
PCBC-395 fix condition in bool type assertion

Change-Id: Id7b3037c5b20bb8adb7acde9520567e3a9a8aec1
Reviewed-on: http://review.couchbase.org/63206
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Mark Nunberg <dab05a0fe859c5cb93882b2a75a0d613501b07be@couchbase.com>

couchbaselabs/php-couchbase,couchbase/php-couchbase,couchbase/php-couchbase,couchbaselabs/php-couchbase,couchbase/php-couchbase,couchbaselabs/php-couchbase,couchbase/php-couchbase,couchbaselabs/php-couchbase