The attached file raises an `IndexError: tuple index out of range` exception when trying to open it with `zipfile.Zipfile('crash-23b7d72644702df94bfcfaab4c25b01ff31c0b38')`, with the following stacktrace:

```
$ cat test_zip.py
import zipfile
import sys

with zipfile.ZipFile(sys.argv[1]) as f:
  pass
$ python3 ./test_zip.py ./crash-23b7d72644702df94bfcfaab4c25b01ff31c0b38
Traceback (most recent call last):
  File "./test_zip.py", line 4, in <module>
    with zipfile.ZipFile(sys.argv[1]) as f:
  File "/usr/lib/python3.7/zipfile.py", line 1225, in __init__
    self._RealGetContents()
  File "/usr/lib/python3.7/zipfile.py", line 1348, in _RealGetContents
    x._decodeExtra()
  File "/usr/lib/python3.7/zipfile.py", line 480, in _decodeExtra
    self.file_size = counts[idx]
IndexError: tuple index out of range
$

```

The zipfile documentation doesn't mention that IndexError is a possible exception for this method.