From eeb280f3518a8d7fc2e45f06ac7748f42d8a0000 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sun, 25 Dec 2022 18:07:47 +0100
Subject: [PATCH] avfilter/af_afir: fix prev_selir variable change in private
 filter context

---
 libavfilter/af_afir.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/libavfilter/af_afir.c b/libavfilter/af_afir.c
index 3fd641bf44..2d09b2a0e1 100644
--- a/libavfilter/af_afir.c
+++ b/libavfilter/af_afir.c
@@ -632,15 +632,16 @@ static int process_command(AVFilterContext *ctx,
                            int flags)
 {
     AudioFIRContext *s = ctx->priv;
-    int ret;
+    int prev_selir, ret;
 
-    s->prev_selir = s->selir;
+    prev_selir = s->selir;
     ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
     if (ret < 0)
         return ret;
 
     s->selir = FFMIN(s->nb_irs - 1, s->selir);
-    if (s->selir != s->prev_selir) {
+    if (s->selir != prev_selir) {
+        s->prev_selir = prev_selir;
         for (int n = 0; n < s->nb_segments; n++) {
             AudioFIRSegment *seg = &s->seg[n];