message: [samples] Fix compilation of InstanceLayerExtensionProperties
diff: @@ -49,7 +49,7 @@ int main( int /*argc*/, char ** /*argv*/ )
  for ( auto const & layerProperty : layerProperties )
  {
  std::vector<vk::ExtensionProperties> extensionProperties =
  - vk::enumerateInstanceExtensionProperties( std::string( layerProperty.layerName ) );
  + vk::enumerateInstanceExtensionProperties( vk::Optional<const std::string>( layerProperty.layerName ) );
  propertyData.push_back( PropertyData( layerProperty, extensionProperties ) );
  }
  