Minor style nit-pick

config/middleware.go

@@ -17,6 +17,7 @@ import (
 // This init function registers middleware. Register middleware
 // in the order they should be executed during a request.
 // Middleware execute in this order: A-B-C-*-C-B-A
+// assuming they call the Next handler in the chain.
 func init() {
 	register("gzip", gzip.New)
 	register("header", headers.New)
@@ -30,17 +31,15 @@ func init() {
 	register("markdown", markdown.New)
 }
 
-var (
 // registry stores the registered middleware:
 // both the order and the directives to which they
 // are bound.
-	registry = struct {
+var registry = struct {
 	directiveMap map[string]middleware.Generator
 	ordered      []string
 }{
 	directiveMap: make(map[string]middleware.Generator),
 }
-)
 
 // register binds a middleware generator (outer function)
 // to a directive. Upon each request, middleware will be