configure: fix libavutil.pc generation

Found-by: uau
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

diff --git a/configure b/configure
index f498357..ee26a37 100755 (executable)
--- a/configure
+++ b/configure
@@ -3808,7 +3808,7 @@ get_version LIBAVDEVICE libavdevice/avdevice.h
 get_version LIBAVFILTER libavfilter/version.h
 get_version LIBAVFORMAT libavformat/version.h
 get_version LIBAVRESAMPLE libavresample/version.h
-get_version LIBAVUTIL   libavutil/avutil.h
+get_version LIBAVUTIL   libavutil/version.h
 get_version LIBPOSTPROC libpostproc/postprocess.h
 get_version LIBSWRESAMPLE libswresample/swresample.h
 get_version LIBSWSCALE  libswscale/swscale.h