pgsql: Make psql DETAIL line test unconditionally optional.

Make psql DETAIL line test unconditionally optional.

Commit 3e2a1496bae6 made the psql TAP test require the DETAIL line on
platforms with SA_SIGINFO, rather than making it optional. This
unexpectedly blew up on OpenBSD buildfarm members, because OpenBSD does
not set si_pid for SIGTERM signals even though it has SA_SIGINFO
defined.

So revert to the test as it was in commit 55890a919454, where the detail
line being missing never causes an error.

Author: Jakub Wartak <jakub(dot)wartak(at)enterprisedb(dot)com>
Suggested-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://www.postgresql.org/message-id/2007157.1776269052%40sss.pgh.pa.us

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/446c400fd89b46ac6e71fb01604ffd830f12c9e9

Modified Files
--------------
src/bin/psql/t/001_basic.pl | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)