Description: fs/pipe: Deinitialize the watch_queue when pipe is freed
References:
 https://lore.kernel.org/lkml/20220507115605.96775-1-tcs.kernel@gmail.com/T/
 https://bugzilla.redhat.com/show_bug.cgi?id=2089701
 https://bugzilla.suse.com/show_bug.cgi?id=1199904
Notes:
 carnil> Introduced by db8facfc9faf ("watch_queue, pipe: Free watchqueue
 carnil> state after clearing pipe ring") 5.17-rc8 (and was backported
 carnil> to 5.16.15, 5.15.29 and 5.10.106.
 carnil> CONFIG_WATCH_QUEUE is not enabled in Debian builds.
Bugs:
upstream: needed
5.10-upstream-stable: needed
4.19-upstream-stable: N/A "Vulnerable code not present"
4.9-upstream-stable: N/A "Vulnerable code not present"
sid: needed
5.10-bullse ye-security: needed
4.19-buster-security: N/A "Vulnerable code not present"
4.9-stretch-security: N/A "Vulnerable code not present"