Fixed crash if RAWINPUT is not initialized

We shouldn't be doing any of this work in that case

(cherry picked from commit dfc5e6964eca0a0813768518d08cf1c80136e896)

src/joystick/windows/SDL_rawinputjoystick.c

@@ -1102,8 +1102,13 @@ static void RAWINPUT_PostUpdate(void)
 
 static void RAWINPUT_JoystickDetect(void)
 {
-    SDL_bool remote_desktop = GetSystemMetrics(SM_REMOTESESSION) ? SDL_TRUE : SDL_FALSE;
+    SDL_bool remote_desktop;
 
+    if (!SDL_RAWINPUT_inited) {
+        return;
+    }
+
+    remote_desktop = GetSystemMetrics(SM_REMOTESESSION) ? SDL_TRUE : SDL_FALSE;
     if (remote_desktop != SDL_RAWINPUT_remote_desktop) {
         SDL_RAWINPUT_remote_desktop = remote_desktop;
 
@@ -2008,8 +2013,12 @@ static void RAWINPUT_JoystickClose(SDL_Joystick *joystick)
 
 SDL_bool RAWINPUT_RegisterNotifications(HWND hWnd)
 {
-    RAWINPUTDEVICE rid[SDL_arraysize(subscribed_devices)];
     int i;
+    RAWINPUTDEVICE rid[SDL_arraysize(subscribed_devices)];
+
+    if (!SDL_RAWINPUT_inited) {
+        return SDL_TRUE;
+    }
 
     for (i = 0; i < SDL_arraysize(subscribed_devices); i++) {
         rid[i].usUsagePage = USB_USAGEPAGE_GENERIC_DESKTOP;
@@ -2030,6 +2039,10 @@ void RAWINPUT_UnregisterNotifications()
     int i;
     RAWINPUTDEVICE rid[SDL_arraysize(subscribed_devices)];
 
+    if (!SDL_RAWINPUT_inited) {
+        return SDL_TRUE;
+    }
+
     for (i = 0; i < SDL_arraysize(subscribed_devices); i++) {
         rid[i].usUsagePage = USB_USAGEPAGE_GENERIC_DESKTOP;
         rid[i].usUsage = subscribed_devices[i];