FreeBSD/src 8def06dsys/net80211 ieee80211_output.c

net80211: simplify an #ifdef INET/INET6 block

I got lost in the #ifdef #endif here so I changed the code to a
switch block with two non-overlapping #ifdef parts and a default
which makes it a lot easier to read.

No functional changes.

Sponsored by:   The FreeBSD Foundation
Reviewed by:    (zlei.huang gmail.com)
MFC after:      5 days
Differential Revision: https://reviews.freebsd.org/D36411
DeltaFile
+18-11sys/net80211/ieee80211_output.c
+18-111 files

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