util/nvmutil: reset errno on successful file reads

a non-fatal error could have set errno. when we return
from check_read_or_die(), it should be assumed that
all is well.

i don't think this would mask anything important, but
it may be regarded as a preventative bug fix, since
it most likely only prevents false-positives.

Signed-off-by: Leah Rowe <leah@libreboot.org>

0 files changed, 0 insertions, 0 deletions