Ignore the 2nd address that showed up. As long as the amount you sent is perfect, you don't have to worry about it.
Anyhow, I looked up the 2nd address 1Hg8ZX4dWizehtF47o6mYHcgRRs3zZcXzJ and it doesn't seem to be connected to anything.
It shows 0 balance. Next time you send and if there's another 2nd address showed up together with the right one, it's normal.