META: Misleading error message on using wrong username

I attempted to log in from a computer I don’t usually use, and entered my username as “Rolf Andreassen”, two words; in fact it’s “RolfAndreassen”, one word. The error message I got back was “Incorrect password”, which is misleading. Not until I tried to recover my password did I realise my mistake. Clearly this is an unusual edge case, but I suggest updating the code to give back “No such user” when someone makes this mistake.