user32: Fix for the ending of menu tracking in the default handler of WM_CANCELMODE message with test.

user32: In COMBO_WindowPosChanging() do not change the height of the the dropped rectangle, if the new height is too small.

winmm: SND_ALIAS and SND_ALIAS_ID overlap so when checking for SND_ALIAS_ID make sure it is SND_ALIAS_ID and not SND_ALIAS.

Prevents hanging in Outlook 2000 on sound cleanup.