Clear bug in uinput.py? Missing argument on os.strerror() #135

I am trying to create a custom force feedback device.

Something isn't working right, and so input tries to throw an error with this line:

Except that line seems to have a bug. Instead of throwing UInputError it throws:
TypeError: strerror() takes exactly one argument (0 given)

It looks like the return code from line 245 needs to be stored. So instead of:

if self.dll._uinput_begin_upload(self.fd, ctypes.byref(upload)):
            raise UInputError('Failed to begin uinput upload: ' + os.strerror())

You might want:

ret = self.dll._uinput_begin_upload(self.fd, ctypes.byref(upload))
if ret:
            raise UInputError('Failed to begin uinput upload: ' + os.strerror(ret))

Or am I missing something? If it is an error and I can help with a pull request please let me know!