seanlis

download-aria2 error on linux

2

``` sean@rroot:/tmp$ lx download-aria2 -j 5 473997540772993 Specify at least one URL. Usage: aria2c [OPTIONS] [URI | MAGNET | TORRENT_FILE | METALINK_FILE]... Printing options tagged with '#help'. See -h option...

Fix "Access violation" caused by nullptr passed to SysAllocStringLen().

2

Fixes: https://github.com/Artikash/Textractor/issues/1023