[AD] al_emit_user_event

[Trent Gamblin <trent@xxxxxxxxxx>]

Is it ok and correct if I append something like "Passing a dynamically allocated (malloc, new) event to this
function will result in a memory leak." to the documentation for this function? I was passing in dynamically
allocated events at first and freeing them in the destructor which was causing crashes, presumably because
Allegro does something with the event after the destructor is run?

Trent