[ Oleg, I've CC'd you because this patch makes some modifications,
albeit trivial ones, to tsearch2; let me know if you object to me
applying it ]
This patch makes some cleanups to contrib/ to silence some sparse
warnings:
- remove pointless "extern" keyword from some function definitions in
contrib/tsearch2
- use "NULL" not "0" as NULL pointer in contrib/tsearch,
contrib/tsearch2, contrib/pgbench, and contrib/vacuumlo
Barring any objections I will apply this tomorrow.
-Neil