[PATCH] nl80211: ensure to delete nl socket on driver deinit

[Izoard, CedricX]

Hi,

We faced random wpa_supplicant crashes when deleting p2p group (GO) interfaces.
Investigation shows that crash happen when reading messages on "preq" socket after the interface has been destroyed.

Here is a patch that fix the issue at our side.

Rgds,
cedric
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