!success

[camhart]

I'm running into situations where !success is occuring.

	if (!success)
	{
		DWORD errorCode = GetLastError();
		isolate->ThrowException(v8::Exception::Error(
			v8::String::NewFromUtf8(isolate, "Decryption failed. TODO: Error code").ToLocalChecked()));

		return;
	}

I don't know C++ at all... what needs to happen to get a better error instead of Decryption failed. TODO: Error code?