Fails when passing pathlib.Path object

[stefan6419846]

Passing a pathlib.Path object as the filenames parameter raises some error:

Traceback (most recent call last):
  File "/home/stefan/temp/run.py", line 57, in <module>
    print(reader.decode(path))
  File "/home/stefan/temp/venv/lib/python3.9/site-packages/zxing/__init__.py", line 80, in decode
    for fn_or_im in filenames:
TypeError: 'PosixPath' object is not iterable

python-zxing/zxing/__init__.py

Lines 72 to 76 in ea517d0

	if isinstance(filenames, (str, IOBase, Image) if have_pil else (str, IOBase)):
	one_file = True
	filenames = filenames,
	else:
	one_file = False

seems to be incomplete and probably should check for the inverse, id est for known iterables.

[dlenski]

seems to be incomplete and probably should check for the inverse, id est for known iterables

Want to submit a PR to do it this way instead?