Invalid 7z archive created

[fdellwing]

As mentioned in #41 is here a testcase for the broken archive:

https://github.com/fdellwing/py7zr-testcase

I removed the content of the files and removed confidential information.

> ./run_test.py 

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=de_DE.UTF-8,Utf16=on,HugeFiles=on,64 bits,12 CPUs Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz (906EA),ASM,AES-NI)

Scanning the drive for archives:
1 file, 3171 bytes (4 KiB)

Listing archive: test.7z


ERROR: test.7z : test.7z
Open ERROR: Can not open the file as [7z] archive


ERRORS:
Unsupported feature
WARNINGS:
Unsupported feature


Errors: 1

[miurahr]

v0.5b5 released which include fixes to solve a case reported here.

[fdellwing]

Works for us now :)