C#: Catch exceptions by name.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665631 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/csharp/src/Server/TThreadPoolServer.cs b/lib/csharp/src/Server/TThreadPoolServer.cs
index f8ee355..ac7aa8b 100644
--- a/lib/csharp/src/Server/TThreadPoolServer.cs
+++ b/lib/csharp/src/Server/TThreadPoolServer.cs
@@ -140,7 +140,7 @@
 					//keep processing requests until client disconnects
 				}
 			}
-			catch (TTransportException ttx)
+			catch (TTransportException)
 			{
 				// Assume the client died and continue silently
 			}