[PATCH 1/4] d3dx9: Use BitScanReverse in make_pow2.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
I left behaviour for num == 1 unchanged, but according to the comment it 
should be 0. We don't seem to have a test for that.

  dlls/d3dx9_36/d3dx9_private.h | 15 ++-------------
  1 file changed, 2 insertions(+), 13 deletions(-)