Print the exception for which the connection was closed.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2511 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smack/PacketReader.java

@@ -203,6 +203,8 @@ class PacketReader {
     void notifyConnectionError(Exception e) {
         done = true;
         connection.close();
+        // Print the stack trace to help catch the problem
+        e.printStackTrace();
         // Notify connection listeners of the error.
         ArrayList listenersCopy;
         synchronized (connectionListeners) {