[FFmpeg-cvslog] Fix false positive when detecting dxva2.

[Carl Eugen Hoyos]

ffmpeg | branch: master | Carl Eugen Hoyos <cehoyos at ag.or.at> | Tue Sep 13 10:11:16 2011 +0200| [391b1e391187c30ae0e3bad9c0e9c40df18785bf] | committer: Carl Eugen Hoyos

Fix false positive when detecting dxva2.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=391b1e391187c30ae0e3bad9c0e9c40df18785bf
---

 configure |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/configure b/configure
index cc00b5b..2843794 100755
--- a/configure
+++ b/configure
@@ -2853,7 +2853,7 @@ check_func_headers windows.h MapViewOfFile
 check_func_headers windows.h VirtualAlloc
 
 check_header dlfcn.h
-check_header dxva2api.h
+check_header dxva2api.h -D_WIN32_WINNT=0x0600
 check_header libcrystalhd/libcrystalhd_if.h
 check_header malloc.h
 check_header poll.h