ASoC: pxa: fix null-pointer dereference in filter()
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 v4.9.337 by commit 3ec75e0ea9550b8f2e531172f2e67ba9d5227ec3, it was introduced in version v3.6 by commit 7a824e214e25a49442fe868dac0af8a904b24f58. For more details please see the references link.