asomers 82c097df2f Various Coverity fixes in ifconfig(8)
* Exit early if kldload(2) fails (1011259). This is the only change that
  affects ifconfig's behavior.
* Close memory and resource leaks (1305624, 1305205, 1007100)
* Mark usage() as _Noreturn (1305806, 1305750)
* Fix some dereference after null checks (1011474, 270774)

Reported by:	Coverity
CID:		1305624, 1305205, 1007100, 1305806, 1305750, 1011474,
CID:		270774, 1011259
Reviewed by:	cem
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corp
Differential Revision:	https://reviews.freebsd.org/D10587
2017-05-03 17:21:01 +00:00
..
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2017-02-28 23:42:47 +00:00
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