Fix expect file for MinGW32 ECPG regression tests

John Naylor <john.naylor@postgresql.org>

Commit: 9455e7f5050fdc82ead9858b3aa531cc830b3b56
Author: John Naylor <john.naylor@postgresql.org>
Date: 2021-07-30T22:54:38Z
Releases: 11.13
Fix expect file for MinGW32 ECPG regression tests

On versions 11 and earlier, MinGW32 has a separate expect file for the
regression test changed by master commit 5fcf3945b.

Files