pgsql: Handle PQresultErrorField(PG_DIAG_SQLSTATE) returning NULL in st

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Handle PQresultErrorField(PG_DIAG_SQLSTATE) returning NULL in st
Date: 2015-08-12 15:37:28
Message-ID: E1ZPY5o-0000N5-Mb@gemulon.postgresql.org
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Handle PQresultErrorField(PG_DIAG_SQLSTATE) returning NULL in streamutil.c.

In ff27db5d I missed that PQresultErrorField() may return NULL if
there's no sqlstate associated with an error.

Spotted-By: Coverity
Reported-By: Michael Paquier
Discussion: CAB7nPqQ3o10SY6NVdU4pjq85GQTN5tbbkq2gnNUh2fBNU3rKyQ(at)mail(dot)gmail(dot)com
Backpatch: 9.5, like ff27db5d

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/7685963eeb16c377c2e0ff7b1852b7a8bc527270

Modified Files
--------------
src/bin/pg_basebackup/streamutil.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

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