From 23cf2c5f01d3465a139c7b6ea7b3abb26e3ae080 Mon Sep 17 00:00:00 2001
From: Marton Balint <cus@passwd.hu>
Date: Mon, 1 Sep 2025 00:21:57 +0200
Subject: [PATCH] avformat/urldecode: fix decoding last char if it was percent
 encoded

The length check was too strict and if the end of the string was a percent
encoded sequence it did not decode correctly.

Signed-off-by: Marton Balint <cus@passwd.hu>
---
 libavformat/urldecode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/urldecode.c b/libavformat/urldecode.c
index 5261bcd0cd..150c64c15c 100644
--- a/libavformat/urldecode.c
+++ b/libavformat/urldecode.c
@@ -50,7 +50,7 @@ char *ff_urldecode(const char *url, int decode_plus_sign)
     while (s < url_len) {
         c = url[s++];
 
-        if (c == '%' && s + 2 < url_len) {
+        if (c == '%' && s + 1 < url_len) {
             char c2 = url[s++];
             char c3 = url[s++];
             if (av_isxdigit(c2) && av_isxdigit(c3)) {