Fix NRE in Win32 IpcChannel.StopListening() when no server started

This makes the System.Runtime.Remoting test suite fail in various places on
Windows due to the TestFixtureTearDown method in BaseCalls throwing an NRE.

diff --git a/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Ipc.Win32/IpcChannel.cs b/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Ipc.Win32/IpcChannel.cs
index 883ea72ebe25f4b079ae0a684e021cede538bda7..599edd8a8039f54801a5191592799319ee077632 100644 (file)
--- a/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Ipc.Win32/IpcChannel.cs
+++ b/mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Ipc.Win32/IpcChannel.cs
@@ -115,7 +115,8 @@ namespace System.Runtime.Remoting.Channels.Ipc.Win32
 
         public void StartListening(object data)
         {
-            serverChannel.StartListening(data);
+            if (serverChannel != null)
+                serverChannel.StartListening(data);
         }
 
         public object ChannelData
@@ -128,7 +129,8 @@ namespace System.Runtime.Remoting.Channels.Ipc.Win32
 
         public void StopListening(object data)
         {
-            serverChannel.StopListening(data);
+            if (serverChannel != null)
+                serverChannel.StopListening(data);
         }
 
         public string[] GetUrlsForUri(string objectURI)