aria2c win32/64 and pipe (-i-)

[pasha-zzz]

EXE from SF, 1.18.6 b1 (precompiled).
When I try to execute something like:

echo http://www.example.com|aria2c -i-

it waits input from console. And if I press Ctrl+Z and Enter - no URLs found.
CygWin version 1.17.1 under cmd.exe works fine. WGet forks fine with the same CL.

[tatsuhiro-t]

Fix committed via bd0a396