comctl32: fix visual glitches with TVS_HASLINES

[Felix Nawothnig]

For screenshots see:

http://users.holycrap.org/flexo/tv1-old.png
http://users.holycrap.org/flexo/tv2-new.png
http://users.holycrap.org/flexo/tv3-native.png

(one has even height items, one odd)

The glitches I'm refering to are the tiny double dots.

---
  dlls/comctl32/treeview.c |   13 ++++++++++---
  1 files changed, 10 insertions(+), 3 deletions(-)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 1e536a47fef95e5318aaed08d7027191d02e2470.diff
Type: text/x-patch
Size: 1190 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20070312/74f294b8/1e536a47fef95e5318aaed08d7027191d02e2470-0001.bin