windows generate process fail

ssh-keygen is a good tool to make a ssh key easily. But when I use it on window 7 system. It would fail. the callback will not return error object at the same time.

I look up the source code and find the bin which the program use . I click it directly. It throw a error like this


and I change the bin with [portable msysgit bin](https://github.com/msysgit/msysgit/releases) [portalble link](https://github.com/msysgit/msysgit/releases/download/Git-1.9.5-preview20150319/PortableGit-1.9.5-preview20150319.7z) using the files like


It work again.

I hope the problem can be solved to make the project better