From 78f389bd8079a240933be0d44eefd482317eedbc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Rydg=C3=A5rd?= <hrydgard@gmail.com>
Date: Sun, 11 Oct 2026 21:37:20 +0200
Subject: [PATCH] Close the file used to detect a background image's format

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 UI/GameSettingsScreen.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/UI/GameSettingsScreen.cpp b/UI/GameSettingsScreen.cpp
index e20b5ff7ff..f53fffa8a5 100644
--- a/UI/GameSettingsScreen.cpp
+++ b/UI/GameSettingsScreen.cpp
@@ -1632,6 +1632,9 @@ void GameSettingsScreen::OnChangeBackground(UI::EventParams &e) {
 			if (f != nullptr && 8 == fread(buffer, 1, ARRAY_SIZE(buffer), f)) {
 				type = DetectImageFileType(buffer, ARRAY_SIZE(buffer));
 			}
+			if (f) {
+				fclose(f);
+			}
 
 			std::string filename;
 			switch (type) {