fs: jfs: fix possible NULL pointer dereference in dbFree()
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 v5.18.3 by commit 9d3fec8ab6e1f5c36078a4d0432b663c1c4c0e74. For more details please see the references link.