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

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

1 files changed, 2 insertions, 5 deletions

diff --git a/miscutils/rx.c b/miscutils/rx.c
index 3a8b6a8fe..4c5d5a19c 100644
--- a/miscutils/rx.c
+++ b/miscutils/rx.c
@@ -234,21 +234,18 @@ static void sigalrm_handler(int UNUSED_PARAM signum)
 }
 
 int rx_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rx_main(int argc, char **argv)
+int rx_main(int argc UNUSED_PARAM, char **argv)
 {
         struct termios tty, orig_tty;
         int termios_err;
         int file_fd;
         int n;
 
-        if (argc != 2)
-                bb_show_usage();
-
         /* Disabled by vda:
          * why we can't receive from stdin? Why we *require*
          * controlling tty?? */
         /*read_fd = xopen(CURRENT_TTY, O_RDWR);*/
-        file_fd = xopen(argv[1], O_RDWR|O_CREAT|O_TRUNC);
+        file_fd = xopen(single_argv(argv), O_RDWR|O_CREAT|O_TRUNC);
 
         termios_err = tcgetattr(read_fd, &tty);
         if (termios_err == 0) {