(main): Don't overrun array bound if argc is 0.

That would happen when invoked via: execl ("/usr/bin/sort", NULL);

1 files changed, 1 insertions, 1 deletions

diff --git a/src/sort.c b/src/sort.c
index ede496026..0357c8e33 100644
--- a/src/sort.c
+++ b/src/sort.c
@@ -2265,7 +2265,7 @@ main (int argc, char **argv)
 				long_options, NULL))
 	      == -1))
 	{
-	  if (optind == argc)
+	  if (argc < optind)
 	    break;
 	  files[nfiles++] = argv[optind++];
 	}