avcodec/cngenc: Replace av_free() by av_freep() in close function

This avoids leaving pointers to already freed memory in memory.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

diff --git a/libavcodec/cngenc.c b/libavcodec/cngenc.c
index e185c4a40a98a0020c7fbb11ff62b20212dbcef0..8f23b7555a2c6fa721fb4e67d449591f3a276b92 100644 (file)
--- a/libavcodec/cngenc.c
+++ b/libavcodec/cngenc.c
@@ -37,8 +37,8 @@ static av_cold int cng_encode_close(AVCodecContext *avctx)
 {
     CNGContext *p = avctx->priv_data;
     ff_lpc_end(&p->lpc);
-    av_free(p->samples32);
-    av_free(p->ref_coef);
+    av_freep(&p->samples32);
+    av_freep(&p->ref_coef);
     return 0;
 }