Description: USB: gadget: f_midi: fixing a possible double-free in f_midi
References:
Notes:
 carnil> Issue fixes ad0d1a058eac ("usb: gadget: f_midi: fix leak on
 carnil> failed to enqueue out requests") which is in 4.4-rc5.
Bugs:
upstream: released (4.17-rc1) [7fafcfdf6377b18b2a726ea554d6e593ba44349f]
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: released (4.9.96) [b3b0809ac25c3ffedc58e7f83bc01a03193e7834]
3.16-upstream-stable: N/A "Vulnerability introduced later"
sid: released (4.16.5-1)
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: released (4.9.107-1)
3.16-jessie-security: N/A "Vulnerability introduced later"