perf(urlencoded): move empty-body guard to avoid extra function closure

Author: Phillip9587

lib/types/urlencoded.js

@@ -39,13 +39,7 @@ function urlencoded (options) {
   }
 
   // create the appropriate query parser
-  var queryparse = createQueryParser(options)
-
-  function parse (body, encoding) {
-    return body.length
-      ? queryparse(body, encoding)
-      : {}
-  }
+  const parse = createQueryParser(options)
 
   const readOptions = {
     ...normalizedOptions,
@@ -86,7 +80,9 @@ function createQueryParser (options) {
     parameterLimit = parameterLimit | 0
   }
 
-  return function queryparse (body, encoding) {
+  return function parse (body, encoding) {
+    if (!body.length) return {}
+
     var paramCount = parameterCount(body, parameterLimit)
 
     if (paramCount === undefined) {