Merge pull request SAML-Toolkits#461 from HarlemSquirrel/warn-fix-20180606

Update Response

Author: pitbulk

lib/onelogin/ruby-saml/response.rb

@@ -173,7 +173,7 @@ def attributes
                 else
                   REXML::XPath.match(e,'a:NameID', { "a" => ASSERTION }).collect do |n|
                     base_path = n.attributes['NameQualifier'] ? "#{n.attributes['NameQualifier']}/" : ''
-                    base_path + Utils.element_text(n)
+                    "#{base_path}#{Utils.element_text(n)}"
                   end
                 end
               }