Commit 0b952386a0 for ffmpeg

commit 0b952386a08b626e8e5807761499cb8d1c4763b3
Author: Zhao Zhili <quinkblack@foxmail.com>
Date:   Wed Oct 7 21:20:15 2026 +0800

    avfilter/vf_gainmap: fix leak of the gain map parameters

    Regression since: a01246f079e

diff --git a/libavfilter/vf_gainmap.c b/libavfilter/vf_gainmap.c
index 7b8b81614b..b8f6c89bee 100644
--- a/libavfilter/vf_gainmap.c
+++ b/libavfilter/vf_gainmap.c
@@ -742,6 +742,7 @@ static av_cold void uninit(AVFilterContext *ctx)
     av_freep(&s->slice_min);
     av_freep(&s->slice_max);
     av_freep(&s->slice_sum);
+    av_freep(&s->params);
 }

 static const AVFilterPad gainmap_inputs[] = {