[Xcb] Why is xcb_leave_notify_event_t a typedef?

[Ulrich Eckhardt]

Hi!

The question is why this is a typedef for xcb_enter_notify_event_t instead of 
a separate type? The problem I had with this was when creating an overloaded 
C++ function to format this as a string - you can't create overloads for 
typedefs, which are mere aliases, you need separate types instead.

Is this necessary for something or was it just convenience?

Uli