[PATCH] winemac.drv: use NI_COMPOSITIONSTR/CPS_CANCEL when composition string is empty

[Aric Stewart]

This sends the expected WM_IME_ENDCOMPOSITION message

Signed-off-by: Aric Stewart <aric(a)codeweavers.com>
---
 dlls/winemac.drv/ime.c | 32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)