joystick: Ensure HIDAPI is initialized before calling it

src/joystick/linux/SDL_sysjoystick.c

@@ -120,6 +120,8 @@ IsJoystick(int fd, char *namebuf, const size_t namebuflen, SDL_JoystickGUID *gui
     }
 
 #ifdef SDL_JOYSTICK_HIDAPI
+    SDL_HIDAPI_JoystickDriver.Init();
+
     if (HIDAPI_IsDevicePresent(inpid.vendor, inpid.product, inpid.version)) {
         /* The HIDAPI driver is taking care of this device */
         return 0;