FIx: Make SingleInstance start listening after MainForm is Loaded

Netch/Forms/MainForm.cs

@@ -103,6 +103,8 @@ namespace Netch.Forms
                 if (Global.Settings.StartWhenOpened)
                     ControlButton_Click(null, null);
             }));
+
+            Netch.SingleInstance.ListenForArgumentsFromSuccessiveInstances();
         }
 
         private void RecordSize()

Netch/Netch.cs

@@ -54,7 +54,6 @@ namespace Netch
             }
 
             SingleInstance.ArgumentsReceived.Subscribe(SingleInstance_ArgumentsReceived);
-            SingleInstance.ListenForArgumentsFromSuccessiveInstances();
 
             // 清理上一次的日志文件，防止淤积占用磁盘空间
             if (Directory.Exists("logging"))