fix race-condition crash when extracting data and extracted files are (re)moved

[devsnd]

To reproduce you can extract a zip file with known contents while deleting the extracted files in a loop, e.g.

A zip file, foo.zip with the content:

 bar.txt

Then, in a shell run a loop that triggers this race condition:

 $ while true; do rm bar.txt; done

In another shell, extract your files:

  AdmZip('foo.zip').extractAllToAsync(...)

This will then crash and take your node process with it, because the file will have been removed between the Utils.writeFileToAsync and fs.utimesSync calls.

This PR fixes this bug and will return an error when this condition occurs.