From 1ee863a7b05aaf358c43c3a788e020cc1c752c59 Mon Sep 17 00:00:00 2001
From: Limin Wang <lance.lmwang@gmail.com>
Date: Thu, 18 Jul 2019 06:59:35 +0800
Subject: [PATCH] lavc/videotoolboxenc: make transfer_fnc initialized for
 unsupport function

The current function will report one error message, but the caller func
haven't check it, so change the default to process as AVCOL_TRC_UNSPECIFIED.

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: Rick Kern <kernrj@gmail.com>
---
 libavcodec/videotoolboxenc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/videotoolboxenc.c b/libavcodec/videotoolboxenc.c
index ece9d6ea8f..d76bb7f646 100644
--- a/libavcodec/videotoolboxenc.c
+++ b/libavcodec/videotoolboxenc.c
@@ -949,6 +949,7 @@ static int get_cv_transfer_function(AVCodecContext *avctx,
             break;
 
         default:
+            *transfer_fnc = NULL;
             av_log(avctx, AV_LOG_ERROR, "Transfer function %s is not supported.\n", av_color_transfer_name(trc));
             return -1;
     }