pgsql: Fix compiler warnings (including a seriously bogus elog call);

Log Message:
-----------
Fix compiler warnings (including a seriously bogus elog call); minor
code beautification.

Modified Files:
--------------
pgsql/src/backend/utils/adt:
trigfuncs.c (r1.1 -> r1.2)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/trigfuncs.c?r1=1.1&r2=1.2)