Prevent stack overflow in query-type functions.

Noah Misch <noah@leadboat.com>

Commit: 5976097c0fce03f8cc201aefc4445ad57e09bb75
Author: Noah Misch <noah@leadboat.com>
Date: 2015-10-05T14:06:30Z
Releases: 9.6.0
Prevent stack overflow in query-type functions.

The tsquery, ltxtquery and query_int data types have a common ancestor.
Having acquired check_stack_depth() calls independently, each was
missing at least one call.  Back-patch to 9.0 (all supported versions).

Files