Check for error during PQendcopy.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 609fa63db6d1e1f2c27a6dd31e9ac8d3b7bcae03
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2017-06-30T16:22:33Z
Releases: 10.0
Check for error during PQendcopy.

Oversight in commit 78c8c8143; noted while nosing around the
walreceiver startup/shutdown code.

Files