pgsql: Fix typo in planner.c - Mailing list pgsql-committers

Fix typo in planner.c

b8cfcb9e00da did not get this change right.

Author: Alexander Law <exclusion@gmail.com>
Discussion: https://postgr.es/m/CAJ0YPFFWhJXs-e-=7iJz-FLp=b1dXfJA_qtrVAgto=bZmzD9zQ@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/ae283736025c2d0b41a4106788b4e45ffba6c82d

Modified Files
--------------
src/backend/optimizer/plan/planner.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)