[ruby/uri] URI.extract needs to pass block

If given block to URI.extract, it returns nil.

https://github.com/ruby/uri/commit/984145c407

lib/uri/rfc3986_parser.rb

@@ -141,8 +141,8 @@ module URI
     end
 
     # Compatibility for RFC2396 parser
-    def extract(str, schemes = nil) # :nodoc:
-      RFC2396_PARSER.extract(str, schemes)
+    def extract(str, schemes = nil, &block) # :nodoc:
+      RFC2396_PARSER.extract(str, schemes, &block)
     end
 
     # Compatibility for RFC2396 parser