[Modify] Polish it

websocket-sharp/Ext.cs

@@ -703,14 +703,16 @@ namespace WebSocketSharp
       long length,
       int bufferLength,
       Action<byte[]> completed,
-      Action<Exception> error)
+      Action<Exception> error
+    )
     {
       var dest = new MemoryStream ();
       var buff = new byte[bufferLength];
       var retry = 0;
 
       Action<long> read = null;
-      read = len => {
+      read =
+        len => {
           if (len < bufferLength)
             bufferLength = (int) len;
 
@@ -726,8 +728,12 @@ namespace WebSocketSharp
 
                 if (nread == 0 && retry < _retry) {
                   retry++;
+                  read (len);
+
+                  return;
                 }
-              else if (nread == 0 || nread == len) {
+
+                if (nread == 0 || nread == len) {
                   if (completed != null) {
                     dest.Close ();
                     completed (dest.ToArray ());
@@ -736,10 +742,8 @@ namespace WebSocketSharp
                   dest.Dispose ();
                   return;
                 }
-              else {
-                retry = 0;
-              }
 
+                retry = 0;
                 read (len - nread);
               }
               catch (Exception ex) {
@@ -748,7 +752,8 @@ namespace WebSocketSharp
                   error (ex);
               }
             },
-          null);
+            null
+          );
         };
 
       try {