fix 64p serverinfo requests (wrong use of sizeof)

Your(TM) code is misbehaving; please pull this ASAP, as it may cause issues in 64player-aware clients, when refreshing server info. The problem is that sizeof gets a pointer as operand, which is not what was intended.

(on an unrelated note, please learn how to use git properly.  I don't like how you destroyed author/committer metadata including the commit history, by not properly forking but rather importing code from a tarball or the like. Not particularly cool (i only noticed because the affected code by this pull request was actually written by me))