Fixed hanging on startup in native OS X backend when Xbox 360 gamepad is connected

Apple's HID Utilities has a issue with device elements enumeration while using unofficial drivers from here:
http://tattiebogle.net/index.php/ProjectRoot/Xbox360Controller/OsxDriver

src/cocoa/i_joystick.cpp

@@ -152,10 +152,20 @@ IOKitJoystick::IOKitJoystick( IOHIDDeviceRef device )
 : m_device( device )
 , m_sensitivity( DEFAULT_SENSITIVITY )
 {
-	IOHIDElementRef element = HIDGetFirstDeviceElement( device, kHIDElementTypeInput );
+	assert(NULL != device);
+	assert(IOHIDDeviceGetTypeID() == CFGetTypeID(device));
 
-	while ( NULL != element )
+	CFArrayRef elements = IOHIDDeviceCopyMatchingElements(device, NULL, kIOHIDOptionsTypeNone);
+	assert(NULL != elements);
+	assert(CFArrayGetTypeID() == CFGetTypeID(elements));
+
+	for (CFIndex i = 0, count = CFArrayGetCount(elements); i < count; ++i)
 	{
+		const IOHIDElementRef element =
+			static_cast<IOHIDElementRef>(const_cast<void*>(CFArrayGetValueAtIndex(elements, i)));
+		assert(NULL != element);
+		assert(IOHIDElementGetTypeID() == CFGetTypeID(element));
+
 		const uint32_t usagePage = IOHIDElementGetUsagePage( element );
 
 		if ( kHIDPage_GenericDesktop == usagePage )
@@ -200,10 +210,10 @@ IOKitJoystick::IOKitJoystick( IOHIDDeviceRef device )
 			
 			HIDQueueElement( m_device, element );
 		}
-		
-		element = HIDGetNextDeviceElement( element, kHIDElementTypeInput );
 	}
 
+	CFRelease(elements);
+
 	SetDefaultConfig();
 }