pgsql: Minimize calls of pg_class_aclcheck to minimum necessary

Minimize calls of pg_class_aclcheck to minimum necessary

In a couple of code paths, pg_class_aclcheck is called in succession
with multiple different modes set.  This patch combines those modes to
have a single call of this function and reduce a bit process overhead
for permission checking.

Author: Michael Paquier <michael@otacoo.com>
Reviewed-by: Fabrízio de Royes Mello <fabriziomello@gmail.com>

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/e64d3c5635cef9ee2e9d67904f1d3e88f4d8b2e7

Modified Files
--------------
src/backend/commands/sequence.c |   12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)