Accept any http.Handler implementation in HandlerFuncAdapter

The adapter already uses handlerFunc via it's interface, calls `handlerFunc.ServeHTTP(args)` instead of `handlerFunc(args)`.

Change to accept any interface implementation instead of only the `http.HandlerFunc` implementation.

Author: Emil Pirfält

handlerfunc/adapter.go

@@ -9,12 +9,12 @@ import (
 
 type HandlerFuncAdapter struct {
 	core.RequestAccessor
-	handlerFunc http.HandlerFunc
+	handlerFunc http.Handler
 }
 
-func New(handlerFunc http.HandlerFunc) *HandlerFuncAdapter {
+func New(handler http.Handler) *HandlerFuncAdapter {
 	return &HandlerFuncAdapter{
-		handlerFunc: handlerFunc,
+		handlerFunc: handler,
 	}
 }