Re: Regression in `git diff --quiet HEAD` when a new file is staged

Lidong Yan [off-list ref] writes:

quoted

+ diff_free_file(o);
+ o->file = xfopen("/dev/null", "w");
+ o->close_file = 1;
+ o->color_moved = 0;
o->dry_run = 1;
o->found_changes = 0;
diff_flush_patch(p, o);

This would make everything going to "/dev/null" after the flush_quietly() call.
I think we need to restore o->file.

Ah, true, the original location was only for NO_OUTPUT but the other
caller to the diff_flush_patch_quietly() helper does deal with other
cases as well.

Thanks.