Zero the pitem array so checking items after those used works as
authornicm <nicm@openbsd.org>
Wed, 14 Jul 2010 13:13:42 +0000 (13:13 +0000)
committernicm <nicm@openbsd.org>
Wed, 14 Jul 2010 13:13:42 +0000 (13:13 +0000)
commitc57b7382c926e506dc6a46223e2875f5851a136d
tree70c0b1455d11f4e702e7eec79685e994eee878e6
parentb903e62bf6603cc73bea79615e9f31f82c982fc0
Zero the pitem array so checking items after those used works as
expected, also do not look beyond the size of the array.

ok otto deraadt
usr.bin/yacc/reader.c