Set the server socket backlog to 100

git-svn-id: http://root.cern.ch/svn/root/trunk@41450 27541ba8-7e3a-0410-8455-c3a389f83636

tutorials/net/parallelMergeServer.C

@@ -317,7 +317,7 @@ void parallelMergeServer(bool cache = false) {
    // Open a server socket looking for connections on a named service or
    // on a specified port.
    //TServerSocket *ss = new TServerSocket("rootserv", kTRUE);
-   TServerSocket *ss = new TServerSocket(1095, kTRUE);
+   TServerSocket *ss = new TServerSocket(1095, kTRUE, 100);
    if (!ss->IsValid()) {
       return;
    }