[FFmpeg-devel] [PATCH V2] avutil/tx: add check against (*ctx)

[Ruiling Song]

ctx is a pointer to pointer here.

Signed-off-by: Ruiling Song <ruiling.song at intel.com>
---
 libavutil/tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/tx.c b/libavutil/tx.c
index 934ef27c81..1690604040 100644
--- a/libavutil/tx.c
+++ b/libavutil/tx.c
@@ -697,7 +697,7 @@ static int gen_mdct_exptab(AVTXContext *s, int len4, double scale)
 
 av_cold void av_tx_uninit(AVTXContext **ctx)
 {
-    if (!ctx)
+    if (!ctx || !(*ctx))
         return;
 
     av_free((*ctx)->pfatab);
-- 
2.17.1