pgsql: Fix recent pg_walinspect fpi_length bug.

Fix recent pg_walinspect fpi_length bug.

Commit 0276ae42dd taught pg_walinspect's pg_get_wal_record_info()
function to output NULLs rather than empty strings for its record
description and block_ref output parameters. However, it inadvertently
moved the function call that sets fpi_length until after it was already
set. As a result, pg_get_wal_record_info() always output spurious
fpi_length values of 0.

Fix by switching the order back (but keep the behavioral change).

Author: Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>
Discussion: https://postgr.es/m/CAH2-WzkJmgSYkt6-smQ+57SxSmov+EKqFZdSimFewosoL_JKoA@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/bade01cb4dd88f63bd9024cfdaec3d5001a805f3

Modified Files
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contrib/pg_walinspect/pg_walinspect.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)