[PATCH] fix typo in commit a4523c5

Attached patch fixes typo in regression test src/test/regress/sql/create_index.sql
that was introduced in commit a4523c5
("Improve planning of btree index scans using ScalarArrayOpExpr quals.").

In this commit the following lines were added to create_index.sql:

SET enable_indexonlyscan = OFF;
...
RESET enable_indexscan;

Obviously, the last line should be

RESET enable_indexonlyscan;

--
Nikita Glukhov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company