avformat/mov: Use ff_configure_buffers_for_index()

Fixes Ticket2513
Fixes Ticket4432
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/mov.c

@@ -4299,6 +4299,7 @@ static int mov_read_header(AVFormatContext *s)
             break;
         }
     }
+    ff_configure_buffers_for_index(s, AV_TIME_BASE);
 
     return 0;
 }