fix no host when using url_for
fix no host when using url_for

lassebunk/dynamic_sitemaps,JisuPark/dynamic_sitemaps,AnthonyBobsin/dynamic_sitemaps,lassebunk/dynamic_sitemaps,JisuPark/dynamic_sitemaps,lassebunk/dynamic_sitemaps,AnthonyBobsin/dynamic_sitemaps,JisuPark/dynamic_sitemaps,AnthonyBobsin/dynamic_sitemaps,AnthonyBobsin/dynamic_sitemaps