Suppress a warching around catching `Failure` from `int_of_string`
Suppress a warching around catching `Failure` from `int_of_string`

The intention here is to give better debugging output. It doesn't
really matter what the `x` is in `Failure x` since we know it comes
from `int_of_string`.

Signed-off-by: David Scott <bfcdf3e6ca6cef45543bfbb57509c92aec9a39fb@recoil.org>

mirage/ocaml-tar