apport_python_hook.py fails when running from nonexisting directory on linux

when current directory no longer exists (deleted by other process), apport crashes.
this was tested on Linux:

[Wed Oct 30 14:43:50.665 2019] Error in sys.excepthook:
[Wed Oct 30 14:43:50.665 2019] Traceback (most recent call last):
[Wed Oct 30 14:43:50.665 2019] File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 67, in apport_excepthook
[Wed Oct 30 14:43:50.665 2019] binary = os.path.realpath(os.path.join(os.getcwd(), sys.argv[0]))
[Wed Oct 30 14:43:50.665 2019] FileNotFoundError: [Errno 2] No such file or directory

also, are you sure you want to search for sys.argv[0] in current directory?