Log Message:
-----------
Change if (!(x || y)) construct with if (!x && !y), for clarity.
Modified Files:
--------------
pgsql/src/backend/postmaster:
pgstat.c (r1.115 -> r1.116)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/pgstat.c.diff?r1=1.115&r2=1.116)