### 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
if (graphics_extension) {
		return graphics_extension->get_swapchain_format_name(p_swapchain_format);
	}
	return String("Swapchain format ") + String::num_int64(int64_t(p_swapchain_format));
}
bool OpenXRAPI::load_layer_properties() {
	
	if (layer_properties != nullptr) {
		
		return true;
	}
	
	XrResult result = xrEnumerateApiLayerProperties(0, &num_layer_properties, nullptr);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate number of api layer properties");
	layer_properties = (XrApiLayerProperties *)memalloc(sizeof(XrApiLayerProperties) * num_layer_properties);
	ERR_FAIL_NULL_V(layer_properties, false);
	for (uint32_t i = 0; i < num_layer_properties; i++) {
		layer_properties[i].type = XR_TYPE_API_LAYER_PROPERTIES;
		layer_properties[i].next = nullptr;
	}
	result = xrEnumerateApiLayerProperties(num_layer_properties, &num_layer_properties, layer_properties);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate api layer properties");
	for (uint32_t i = 0; i < num_layer_properties; i++) {
		print_verbose(String("OpenXR: Found OpenXR layer ") + layer_properties[i].layerName);
	}
	return true;
}
bool OpenXRAPI::load_supported_extensions() {