Set SLtt_Ignore_Beep in tty_init().

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/tty/tty-slang.c

@@ -245,6 +245,7 @@ tty_init (gboolean slow, gboolean ugly_lines)
     slow_tty = slow;
     ugly_line_drawing = ugly_lines;
 
+    SLtt_Ignore_Beep = 1;
     SLtt_get_terminfo ();
     SLutf8_enable (-1);
     /*

src/main.c

@@ -1969,10 +1969,6 @@ main (int argc, char *argv[])
     edit_stack_init ();
 #endif
 
-#ifdef HAVE_SLANG
-    SLtt_Ignore_Beep = 1;
-#endif
-
     if (!mc_args_handle (argc, argv, "mc"))
         exit (EXIT_FAILURE);