### Godot version

4.0 Beta 11

### System information

Windows 10 version 22H2, GeForce Game Ready Driver Version 528.02, GTX 1070

### Issue description

Since Beta 11 this error is given whenever a project is run in the forward+ renderer with OpenXR enabled. This error is not present with Beta 10 and previous versions.
![image](https://user-images.githubusercontent.com/38119387/212044209-1179b908-f010-47a1-ae53-bc2faadc30de.png)

I've tested with projects created in previous versions as well as the current version (Beta 11)

### Steps to reproduce

Create project, enable OpenXR in project settings, and run.

### Minimal reproduction project

N/A
Tracker *tracker = tracker_owner.get_or_null(p_trackers[i]);
		if (tracker != nullptr && tracker->toplevel_path != XR_NULL_PATH) {
			ActionTracker action_tracker = {
				p_trackers[i], 
				XR_NULL_HANDLE, 
				false 
			};
			action.trackers.push_back(action_tracker);
			toplevel_paths.push_back(tracker->toplevel_path);
		}
	}
	XrActionCreateInfo action_info = {
		XR_TYPE_ACTION_CREATE_INFO, 
		nullptr, 
		"", 
		action.action_type, 
		uint32_t(toplevel_paths.size()), 
		toplevel_paths.ptr(), 
		"" 
	};
	copy_string_to_char_buffer(p_name, action_info.actionName, XR_MAX_ACTION_NAME_SIZE);
	copy_string_to_char_buffer(p_localized_name, action_info.localizedActionName, XR_MAX_LOCALIZED_ACTION_NAME_SIZE);
	XrResult result = xrCreateAction(action_set->handle, &action_info, &action.handle);
	if (XR_FAILED(result)) {
		print_line("OpenXR: failed to create action ", p_name, "! [", get_error_string(result), "]");
		return RID();
	}
	return action_owner.make_rid(action);
}
String OpenXRAPI::action_get_name(RID p_action) {