[PATCH] comctl32/button: Remove style checking when handling BM_SETIMAGE.

[Zhiyi Zhang]

If BS_ICON and BS_BITMAP are not specified in style and BM_SETIMAGE 
message is used, button shows both image and text. Therefore style 
checking when handling BM_SETIMAGE should be removed in comctl32.

Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com>
---
  dlls/comctl32/button.c       | 141 +++++++++++---------------
  dlls/comctl32/tests/button.c | 234 
+++++++++++++++++++++++++++++++++++++++++++
  2 files changed, 295 insertions(+), 80 deletions(-)