pgsql: docs: in mapping SQL to C data types, timestamp isn't a pointer

docs: in mapping SQL to C data types, timestamp isn't a pointer

It is an int64.

Reported-by: ajulien@shaktiware.fr

Discussion: /messages/by-id/159845038271.24995.15682121015698255155@wrigleys.postgresql.org

Backpatch-through: 9.5

Branch
------
REL9_5_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/102aa4a3553fdaa9f134055d9ffb22a27e3c77ec

Modified Files
--------------
doc/src/sgml/xfunc.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)