Comment 3 for bug 1781725

Today this hit me as well. I had not connected 2 global labels (SCL and SDA) to a connector and of cause, my i2c device did not work very well.
Would really help if ERC could at least warn here (like it does on other unconnected pins without the "not connected" symbol attached)
Someone could say that this is visible in the schematic and this is correct but can be easily overseen as i did.