sane
- Push the kqueue(2) initialization down so the errno will correspond with
the failure instead of potentially being stomped on by functions called
by `PLAIN_REQUIRE_KERNEL_MODULE`
- Delete trailing whitespace
- Add spaces between braces for conditional and control blocks (for/if)
- Use err/errx instead of perror+printf+exit/printf+exit.
- Remove braces for single-line conditionals
Tested with and without -DDEBUG
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division
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