Mount sepolicy.rules for migration

native/src/core/magisk.cpp

@@ -135,7 +135,7 @@ int magisk_main(int argc, char *argv[]) {
     } else if (argc >= 3 && argv[1] == "--install-module"sv) {
         install_module(argv[2]);
     } else if (argv[1] == "--rules-device"sv) {
-        auto dev = find_rules_device(parse_mount_info("self"));
+        auto dev = find_rules_device();
         if (dev) printf("%u:%u\n", major(dev), minor(dev));
         return dev ? 0 : 1;
     }