Description: media: v4l: ioctl: Fix memory leak in video_usercopy
References:
 https://bugzilla.suse.com/show_bug.cgi?id=1184120
Notes:
Bugs:
upstream: released (5.12-rc1) [fb18802a338b36f675a388fc03d2aa504a0d0899]
5.10-upstream-stable: released (5.10.21) [5400770e31e8b80efc25b4c1d619361255174d11]
4.19-upstream-stable: released (4.19.179) [ff2111a6fab31923685b6ca8ea466ea0576b8a0e]
4.9-upstream-stable: released (4.9.260) [80c22132c0f4bb91cef8c9001bde3057c07f005f]
sid: released (5.10.24-1)
4.19-buster-security: released (4.19.181-1)
4.9-stretch-security: released (4.9.272-1)