SDL: Fix using wrong variable by mistake

SDL Commits
1 
From 765a2e91184c172bebb92f0c732888003c54ca3a Mon Sep 17 00:00:00 2001
From: Susko3 <[EMAIL REDACTED]>
Date: Mon, 15 Dec 2025 22:41:48 +0100
Subject: [PATCH] Fix using wrong variable by mistake

---
 src/joystick/SDL_gamepad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/joystick/SDL_gamepad.c b/src/joystick/SDL_gamepad.c
index 7ac5862a3fcfc..4f688028fdffd 100644
--- a/src/joystick/SDL_gamepad.c
+++ b/src/joystick/SDL_gamepad.c
@@ -2619,7 +2619,7 @@ static int SDL_PrivateAddGamepadMapping(const char *mappingString, SDL_GamepadMa
             } else {
                 const char *hint_value = SDL_GetHint(hint);
                 if (!hint_value) {
-                    hint_value = SDL_getenv_unsafe(hint_value);
+                    hint_value = SDL_getenv_unsafe(hint);
                 }
                 value = SDL_GetStringBoolean(hint_value, default_value);
                 if (negate) {