[Bug 208605] Kernel panic when unplug and replug USB WiFi dongle.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208605

--- Comment #3 from commit-hook at freebsd.org ---
A commit references this bug:

Author: avos
Date: Tue Apr 19 20:19:22 UTC 2016
New revision: 298293
URL: https://svnweb.freebsd.org/changeset/base/298293

Log:
  net80211: do not reschedule scan_curchan_task() if the scan was canceled.

  This should fix possible use-after-free in the scheduled task.

  PR:           208605

Changes:
  head/sys/net80211/ieee80211_scan_sw.c

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