pgsql: Put static forward declarations in elog.c back into same order a

Put static forward declarations in elog.c back into same order as code.

The guiding principle for the last few patches in this area apparently
involved throwing darts.

Cosmetic only, but back-patch to 9.6 because there is no reason for
9.6 and HEAD to diverge yet in this file.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/45a36e68539dcd7095a257b49f6f38ae77dec30d

Modified Files
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src/backend/utils/error/elog.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)