grub-mkrescue problems in argp_parse

[Dietmar Maurer]

After compiling latest zol grub snapshot on wheezy, 
I try to build an ISO with grub-mkrescue:

# grub-mkrescue -o pve-cd.iso data-gz -- -z -r -V 'PVE' -c boot/boot.cat
-isohybrid-gpt-basdat -partition_offset 16 -c boot/boot.ca
grub-mkrescue (GRUB) 2.02-beta2.9-ZOL11-7aa9f6-wheezy

and nothing else happens (no iso, no error).

Looking at the code in grub/util/grub-mkrescue.c reveals problems with
argp_parse()

After reverting the following commit everything works again:

http://git.savannah.gnu.org/cgit/grub.git/commit/?id=cf47a2fba5852014bc59959c5e357e8313933414

Any ideas?