kernel: core_hook: fix refcount leaks on try_umount (#2635)

Signed-off-by: backslashxx <118538522+backslashxx@users.noreply.github.com>
Signed-off-by: rsuntk <rsuntk@yukiprjkt.my.id>
Co-authored-by: backslashxx <118538522+backslashxx@users.noreply.github.com>

kernel/core_hook.c

@@ -566,11 +566,13 @@ static void try_umount(const char *mnt, bool check_mnt, int flags)
 
 	if (path.dentry != path.mnt->mnt_root) {
 		// it is not root mountpoint, maybe umounted by others already.
+		path_put(&path);
 		return;
 	}
 
 	// we are only interest in some specific mounts
 	if (check_mnt && !should_umount(&path)) {
+		path_put(&path);
 		return;
 	}