Log Message:
-----------
Fix unportable isdigit() call --- must cast arg to unsigned char.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
formatting.c (r1.81 -> r1.82)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/formatting.c.diff?r1=1.81&r2=1.82)