fix to unshar: "quit" function

[Michael Mauldin]

Sorry folks, I forgot that "quit" is a local CMU function.  Make the
following change to unshar.c (if you haven't figured it out yourself):

    Replace:
	quit (1, "unshar: cannot open 'sh' process\n");

    With:
	{ fprintf (stderr, "unshar: cannot open 'sh' process\n"); exit (1); }

Michael Mauldin (Fuzzy)
Department of Computer Science
Carnegie-Mellon University
Pittsburgh, PA  15213
(412) 578-3065,  mauldin at cmu-cs-a.arpa