avfilter/vf_crop: add logging context to log

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>

diff --git a/libavfilter/vf_crop.c b/libavfilter/vf_crop.c
index 9fca7a73096901734c11125cbbb4a59755e10f07..d6b4feb5136e2cd9c0ca625ba8e06bf9567da998 100644 (file)
--- a/libavfilter/vf_crop.c
+++ b/libavfilter/vf_crop.c
@@ -244,7 +244,7 @@ static int config_input(AVFilterLink *link)
     return 0;
 
 fail_expr:
-    av_log(NULL, AV_LOG_ERROR, "Error when evaluating the expression '%s'\n", expr);
+    av_log(ctx, AV_LOG_ERROR, "Error when evaluating the expression '%s'\n", expr);
     return ret;
 }