*: remove a few more cases of argc usage. -89 bytes.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/dos2unix.c

@@ -69,7 +69,7 @@ static void convert(char *fn, int conv_type)
 }
 
 int dos2unix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int dos2unix_main(int argc, char **argv)
+int dos2unix_main(int argc UNUSED_PARAM, char **argv)
 {
 	int o, conv_type;
 
@@ -88,11 +88,11 @@ int dos2unix_main(int argc, char **argv)
 	if (o)
 		conv_type = o;
 
+	argv += optind;
 	do {
 		/* might be convert(NULL) if there is no filename given */
-		convert(argv[optind], conv_type);
-		optind++;
-	} while (optind < argc);
+		convert(*argv, conv_type);
+	} while (*++argv);
 
 	return 0;
 }