[Bug 197498] [net80211]: Setting ssid on running interface in adhoc mode causes panic

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197498

--- Comment #8 from commit-hook at freebsd.org ---
A commit references this bug:

Author: avos
Date: Mon Feb 29 21:09:10 UTC 2016
New revision: 296237
URL: https://svnweb.freebsd.org/changeset/base/296237

Log:
  net80211: fix scanning after D5145 (PR 197498 related)

  - In case, when we are doing <smth> -> INIT (FEXT_REINIT) -> <smth2>
  state transition, cancel_scan() may be called in the first transition.
  Reenqueue second state transition, so things will be executed in order.
  - Discard any AUTH+ state transition request when INIT -> SCAN
  transition is not done.
  - Allow to track discarded state transitions via 'state' debugging
  category.

  Tested with:
   * RTL8188EU, HOSTAP mode.
   * RTL8188CUS, STA mode.
   * Intel 3945BG, IBSS and STA modes.

  PR:           197498
  Approved by:  adrian (mentor)
  Differential Revision:        https://reviews.freebsd.org/D5482

Changes:
  head/sys/net80211/ieee80211_proto.c

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