am7xxx-play: free AVCodecContext variables with avcodec_free_context()

Deallocate AVCodecContext variables with avcodec_free_context() instead
of av_free() this is for symmetry with the allocation functions.

Adjust and update the comment to the new code.

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index b523ca6..b43adc6 100644 (file)
--- a/examples/am7xxx-play.c
+++ b/examples/am7xxx-play.c
@@ -267,7 +267,7 @@ static int video_output_init(struct video_output_ctx *output_ctx,
 
 cleanup:
        avcodec_close(output_codec_ctx);
-       av_free(output_codec_ctx);
+       avcodec_free_context(&output_codec_ctx);
 out:
        return ret;
 }
@@ -474,11 +474,11 @@ cleanup_picture_raw:
        av_frame_free(&picture_raw);
 
 cleanup_output:
-       /* av_free is needed as well,
-        * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
+       /* Freeing the codec context is needed as well,
+        * see https://libav.org/documentation/doxygen/master/group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f
         */
        avcodec_close(output_ctx.codec_ctx);
-       av_free(output_ctx.codec_ctx);
+       avcodec_free_context(&(output_ctx.codec_ctx));
 
 cleanup_input:
        avcodec_close(input_ctx.codec_ctx);