download error upper 4GB shared file ver 0.9.12

[Hiroki Niinuma]

Hi All.

In ver 0.9.12,

I tried large shared file download from guacmenu.
result,
4294967295byte(4GB-1) OK,
4294967296byte(4GB) Failure.

Upper 4GB file downloading is not ending.
7,8,9.0GB....

please advice if setting, env, or etc problem.

Thanks.