Test errno against EEXIST as well.

MFC after:	3 days


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274383 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Remove myself from bxe(4) maintenance.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274384 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f