Small simplification

Author: trevorrjohn

lib/rails/html/scrubbers.rb

@@ -140,9 +140,7 @@ def scrub_attribute(node, attr_node)
             attr_node.node_name
           end
 
-          if Loofah::HTML5::SafeList::ATTR_VAL_IS_URI.include?(attr_name)
-            return if Loofah::HTML5::Scrub.scrub_uri_attribute(attr_node)
-          end
+          return if Loofah::HTML5::SafeList::ATTR_VAL_IS_URI.include?(attr_name) && Loofah::HTML5::Scrub.scrub_uri_attribute(attr_node)
 
           if Loofah::HTML5::SafeList::SVG_ATTR_VAL_ALLOWS_REF.include?(attr_name)
             Loofah::HTML5::Scrub.scrub_attribute_that_allows_local_ref(attr_node)