Description: ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check
References:
 https://syzkaller.appspot.com/bug?id=3ec1dad62657fef22282536d7532dbb65eee778a
Notes:
 bwh> Introduced in 5.3-rc1 by commit 801ebf1043ae "ALSA: usb-audio: Sanity
 bwh> checks for each pipe and EP types" (!).  Both the breaking and fixing
 bwh> commits were backported in 5.2.8.
Bugs:
upstream: released (5.3-rc3) [5d78e1c2b7f4be00bbe62141603a631dc7812f35]
4.19-upstream-stable: N/A "Vulnerability introduced later"
4.9-upstream-stable: N/A "Vulnerability introduced later"
3.16-upstream-stable: N/A "Vulnerability introduced later"
sid: N/A "Vulnerability introduced later"
4.19-buster-security: N/A "Vulnerability introduced later"
4.9-stretch-security: N/A "Vulnerability introduced later"
3.16-jessie-security: N/A "Vulnerability introduced later"