[PARISC] fix null ptr deref in unwind.c

commit ffb4512276 removed one too many args.
kallsyms_lookup is not safe to call with a NULL *modname. Paper bag over the
problem for the time being.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Kyle McMartin 2007-05-30 02:24:28 -04:00 committed by Kyle McMartin
commit cb9577958d