staging: lustre: lustre: libcfs: fail.c - fix sparse warnings EXPORT_SYMBOL

- this fixes "WARNING: EXPORT_SYMBOL(foo); should immediately follow its
  function/variable"

Signed-off-by: Anil Belur <askb23@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>