SDL: SDL_JoystickGetAttached() doesn't need to be noisy for NULL joystick

From d861820465b3ae77fa37fb3605ca73100320d1ff Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 26 Nov 2021 07:57:19 -0800
Subject: [PATCH] SDL_JoystickGetAttached() doesn't need to be noisy for NULL
 joystick

Fixes https://github.com/libsdl-org/SDL/issues/5008
---
 src/joystick/SDL_joystick.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/joystick/SDL_joystick.c b/src/joystick/SDL_joystick.c
index 95f241bc4f3..e94a8aa3eb7 100644
--- a/src/joystick/SDL_joystick.c
+++ b/src/joystick/SDL_joystick.c
@@ -759,7 +759,7 @@ SDL_JoystickGetButton(SDL_Joystick *joystick, int button)
 SDL_bool
 SDL_JoystickGetAttached(SDL_Joystick *joystick)
 {
-    if (!SDL_PrivateJoystickValid(joystick)) {
+    if (!joystick) {
         return SDL_FALSE;
     }