Fix client selfdestruct for executing in zip file
Fix client selfdestruct for executing in zip file

When you're executing a regular script, __file__ is something like
`./client.py` however when you're executing in a zip file, __file__ is
something like `client.zip/__main__.py` so we need to check for that and
delete the right thing based on that.

ihorlaitan/poet,khanhnnvn/poet,mossberg/poet