MFC r209614:

MFC r209614:

- Don't assign the return value from read(2) to a variable of type
  int.
- Use errx(3) instead of err(3) to print the error message on short
  reads in readlabel(). errno won't be set on short reads which can
  easily occur here due to the fixed size read request.

PR:		144307

git-svn-id: svn://svn.freebsd.org/base/stable/8@210744 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f