aria2-1.18.8 Upstream patch to fix a crash on OSX when proxy is used

__aria2-1.18.8__ will crash if you use a proxy like this: `aria2c --all-proxy=127.0.0.1:8888 ...`

I applied the upstream patch (https://github.com/tatsuhiro-t/aria2/commit/9a931e7)
added the revision 1
and removed the bottles

am I doing it right?

Leave the bottles as-is; we'll update them when we pull.