Patch fails to apply (sometimes silently) when patch includes additions to the end of a file

Hiya,

We stumbled across a bit of a weird edge case that we thought you might like to know about. After doing some digging, it appears the required steps to reproduce are:

* the file you are patching has no newline at the end of it
* you are adding another line to the end of that file (still with no newline)

I can't link the original patch we were working on, but I've reproduced it here: https://github.com/lukebatchelor/patch-package-repro

We had a brief look at trying to fix this (originally assuming patch-package was using git-apply under the hood and hoping we could just pass on the `--inaccurate-eof` [flag](https://git-scm.com/docs/git-apply#Documentation/git-apply.txt---inaccurate-eof) but alas you weren't. It does look like you have [explicit code for handling this](https://github.com/ds300/patch-package/blob/5c2c92bf504885fba4840870a23fc8999c00e572/src/patch/apply.ts#L83) so likely just a small edge case in that logic.

Hope this helps, thanks for making this package