[PATCH] Return scoped_fd from open_source_file and find_and_open_source

[Simon Marchi]

On 2018-11-04 11:05 a.m., Tom Tromey wrote:
> This changes open_source_file and find_and_open_source to return
> scoped_fd, then updates the callers as appropriate, including using
> scoped_fd::to_file.
> 
> Tested by the buildbot.

LGTM, thanks!

Simon