Yet ANOTHER null pointer dereference problem (in "cat")

[Tony L. Hansen]

The zero deference bug still exists in my Vr2 code. Does anyone think that
for Vr3 they'll turn on the loader option to disallow zero deferences?

					Tony Hansen
					ihnp4!pegasus!hansen

*** /tmp/cat.c	Thu Oct  3 12:42:57 1985
--- /tmp/cat.c.new	Thu Oct  3 21:30:24 1985
***************
*** 79,85
  	}
  	for (argv = &argv[optind];
  	     optind < argc && !ferror(stdout); optind++, argv++) {
! 		if ((*argv)[0]=='-' && (*argv)[1]=='\0' || stdinflg)
  			fi = stdin;
  		else {
  			if ((fi = fopen(*argv, "r")) == NULL) {

--- 79,85 -----
  	}
  	for (argv = &argv[optind];
  	     optind < argc && !ferror(stdout); optind++, argv++) {
! 		if (stdinflg || ((*argv)[0]=='-' && (*argv)[1]=='\0'))
  			fi = stdin;
  		else {
  			if ((fi = fopen(*argv, "r")) == NULL) {