The issues is that if a message being sent in ImmGenerateMessage gets
turned around and sent into an IME that in response to that message
calls ImmGenerateMessage, the hMsgBuf still has the old message in it
and it ends up getting processed in a loop again and again.
Signed-off-by: Aric Stewart <aric@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>