"hammer cleanup" seg faults

[Matthew Dillon]

:Trying to run "hammer cleanup" results in a seg fault because strstr() is
:called with the first parameter set to null ... attached patch adds an arg3 !=
:NULL check ... simple, but tested to work
:-- 
:Regards,
:Rumko

    Thanks, I've made the change.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>