Just looked. Mine has a slight leak too. Gotta be normal. If you look closely at the white tip you can see a horizontal slit where the oil leaks out. Its normal. Otherwise I'm like you have no clue what it is.
Lol. I just posted a thread on this same thing. It looks like a vent for the transmission. I popped my hood after some spirited driving. It had some slight steam coming off it.