[pgpool-committers: 9005] pgpool: Fix compiler warning.

[Tatsuo Ishii]

Fix compiler warning.

pgpool-regclass.c needed to include "utils/varlena.h".  Also sort out
the header files order (except postgres.h which needs to be appear at
the top among PostgreSQL header files).

The compiler warning was reported by Florian Weimer.
https://www.pgpool.net/pipermail/pgpool-hackers/2022-December/004241.html

Branch
------
V4_0_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=6013de9e208257d64c05cc14c0915df45ebc04a4

Modified Files
--------------
src/sql/pgpool-regclass/pgpool-regclass.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)