Fix use of deprecated av_close_input_file call

configure

@@ -835,7 +835,7 @@ if [ "$lavf" = "auto" ] ; then
         done
     fi
     LAVF_LIBS="-L. $LAVF_LIBS"
-    if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LIBS" "avformat_find_stream_info(0,0); avcodec_open2(0,0,0);" ; then
+    if cc_check libavformat/avformat.h "$LAVF_CFLAGS $LAVF_LIBS" "avformat_close_input(0);" ; then
         if [ "$swscale" = "yes" ]; then
             lavf="yes"
         else

input/lavf.c

@@ -245,7 +245,7 @@ static int close_file( hnd_t handle )
 {
     lavf_hnd_t *h = handle;
     avcodec_close( h->lavf->streams[h->stream_id]->codec );
-    av_close_input_file( h->lavf );
+    avformat_close_input( &h->lavf );
     free( h );
     return 0;
 }