crtools: Fix lost magic arg from print

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>

cr-show.c

@@ -453,7 +453,7 @@ static int cr_parse_file(struct cr_options *opts)
 		show_unixsk(opts->show_dump_file, fd, true);
 		break;
 	default:
-		pr_err("Unknown magic %x on %s\n", opts->show_dump_file);
+		pr_err("Unknown magic %x on %s\n", magic, opts->show_dump_file);
 		goto err;
 	}
 	ret = 0;