Make err.h a bit more Windows friendly
authorJens Axboe <axboe@fb.com>
Wed, 12 Feb 2014 15:22:01 +0000 (08:22 -0700)
committerJens Axboe <axboe@fb.com>
Wed, 12 Feb 2014 15:22:01 +0000 (08:22 -0700)
commite0739a728590d0890615a47988f3e79128e47a05
treef755ed4ce0eea3ab22d37367f740e9e7004d7e60
parentf0fdbcafc3a62b84250e5ccdcaec47e3ffa93a00
Make err.h a bit more Windows friendly

Using unsigned long to hold pointers is a linuxism, clean
it up.

Signed-off-by: Jens Axboe <axboe@fb.com>
err.h