configure: fix typo in avconv dependency list

diff --git a/configure b/configure
index d4e352e..e26124e 100755 (executable)
--- a/configure
+++ b/configure
@@ -1493,8 +1493,8 @@ postproc_deps="gpl"
 # programs
 ffmpeg_deps="avcodec avformat swscale"
 ffmpeg_select="buffer_filter"
-av_deps="avcodec avformat swscale"
-av_select="buffer_filter"
+avconv_deps="avcodec avformat swscale"
+avconv_select="buffer_filter"
 avplay_deps="avcodec avformat swscale sdl"
 avplay_select="rdft"
 avprobe_deps="avcodec avformat"