nilfs2: fix leak of nilfs_root in case of writer thread creation failure
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.9.331 by commit 81fe58e4e7f61a1f5200898e7cd4c9748f83051f, it was introduced in version v2.6.37 by commit e912a5b66837ee89fb025e67b5efeaa11930c2ce. For more details please see the references link.