Ok, EAGLE eyes... what am I missing here?
Almost all the circuit diagram editors I've used will point out discrepancies on pins designated as power pins on an IC. Usually (I can't say this is absolutely correct for Eagle) when a pin is designated as a power pin, the pin name expects to be connected to a net with the same label. You've wired a power pin called Vdd to a net called V+ and there's nothing wrong at all with this but you could: -


Rename the net
Rename the pin
Don't connect it but connect a power symbol (named Vdd) to V+ and you should find that all power pins called Vdd get connected to V+ (This works with OrCAD btw)


It's only a warning so nothing to get worried about but, like Spehro, I hate warnings and do everything to get rid of them because, like he says, it's easy to miss a "real" warning amongst the advisory ones.

If you do go for #3 make sure the power pins do net up when converting to a layout file.