MFV r336487:

Import upline security patch: Extend protection of GTK/IGTK
reinstallation of WNM-Sleep Mode cases. This git commit
87e2db16bafcbc60b8d0016175814a73c1e8ed45.

This commit is is simply a pops change as r324696 already plugged
this vulnerability. To maintain consistency with the vendor branch
props will be changed.

Obtained from: https://w1.fi/security/2017-1/\

		rebased-v2.6-0003-Extend-protection-of-GTK-IGTK-\
		reinstallation-of-WNM-.patch