Fixed building with iOS SDK prior to 13.0 Fixes https://github.com/libsdl-org/SDL/pull/5045
diff --git a/src/joystick/iphoneos/SDL_mfijoystick.m b/src/joystick/iphoneos/SDL_mfijoystick.m
index 3508736..30e4389 100644
--- a/src/joystick/iphoneos/SDL_mfijoystick.m
+++ b/src/joystick/iphoneos/SDL_mfijoystick.m
@@ -66,6 +66,9 @@ static NSString *GCInputXboxShareButton = @"Button Share";
#if defined(__MACOSX__) && (__MAC_OS_X_VERSION_MAX_ALLOWED <= 101600)
+ (BOOL)supportsHIDDevice:(IOHIDDeviceRef)device;
#endif
+#if !((__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 130000) || (__MAC_OS_VERSION_MAX_ALLOWED >= 1500000))
+@property(nonatomic, readonly) NSString *productCategory;
+#endif
@end
@interface GCExtendedGamepad (SDL)
#if !((__IPHONE_OS_VERSION_MAX_ALLOWED >= 121000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 121000) || (__MAC_OS_VERSION_MAX_ALLOWED >= 1401000))