Fix --lock-video-orientation syntax
The argument for option --lock-video-orientation has been made optional
by
With getopt_long(), contrary to mandatory arguments, optional arguments
must be given with a '=':
--lock-video-orientation 2   # wrong, parse error
--lock-video-orientation=2   # correct
@@ -51,7 +51,7 @@ static void test_options(void) {
"--fullscreen",
"--max-fps", "30",
"--max-size", "1024",
- "--lock-video-orientation", "2",
+ "--lock-video-orientation=2", // optional arguments require '='
// "--no-control" is not compatible with "--turn-screen-off"
// "--no-display" is not compatible with "--fulscreen"
"--port", "1234:1236",
