Fixed Linux build

src/joystick/SDL_gamecontroller.c

@@ -884,7 +884,7 @@ static ControllerMapping_t *SDL_PrivateGetControllerMappingForNameAndGUID(const
         if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
             /* The Linux driver xpad.c maps the wireless dpad to buttons */
             SDL_bool existing;
-            mapping = SDL_PrivateAddMappingForGUID(jGUID,
+            mapping = SDL_PrivateAddMappingForGUID(guid,
 "none,X360 Wireless Controller,a:b0,b:b1,back:b6,dpdown:b14,dpleft:b11,dpright:b12,dpup:b13,guide:b8,leftshoulder:b4,leftstick:b9,lefttrigger:a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b10,righttrigger:a5,rightx:a3,righty:a4,start:b7,x:b2,y:b3,",
                           &existing, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
         }