* I2PTunnel: Fix NPE on shared client creation, thx kytv

* Transport: Add Ethiopia to hidden mode list
 * Log and javadoc tweaks

core/java/src/net/i2p/client/I2PSessionImpl.java

@@ -584,7 +584,7 @@ abstract class I2PSessionImpl implements I2PSession, I2CPMessageReader.I2CPMessa
         } else {
             if (_log.shouldLog(Log.DEBUG))
                 _log.debug(getPrefix() + "Message received of type " + message.getType()
-                           + " to be handled by " + handler);
+                           + " to be handled by " + handler.getClass().getSimpleName());
             handler.handleMessage(message, this);
         }
     }