Fix #288: enable built-in sulogin in Alpine and Void Linux builds

Always better to have at least one sulogin available, if the system
provided sulogin isn't available we fall back to the built-in one.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/finit.c

@@ -114,8 +114,8 @@ static int sulogin(int do_reboot)
 {
 	int rc = EX_OSFILE;
 	char *cmd[] = {
-		_PATH_SULOGIN,
 		"sulogin",
+		_PATH_SULOGIN,
 	};
 	size_t i;