getopt: optimize previous patch
authorEric Blake <eblake@redhat.com>
Wed, 8 Sep 2010 14:49:15 +0000 (08:49 -0600)
committerEric Blake <eblake@redhat.com>
Wed, 8 Sep 2010 14:50:20 +0000 (08:50 -0600)
commit28a948d4a051659556d86b676e8bdf4a3a444966
tree62ca3d639ed8987ebac90a7acd469da2ba9cf158
parent37a7671494e1ffe25fc2058ba122bb85ae824090
getopt: optimize previous patch

* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Correctly check for
empty variable.  Speed up awk script.
Reported by Paolo Bonzini.

Signed-off-by: Eric Blake <eblake@redhat.com>
ChangeLog
m4/getopt.m4