Minor queueDeclarePassive javadoc correction

Author: Emile Joubert

src/com/rabbitmq/client/Channel.java

@@ -277,7 +277,7 @@ Queue.DeclareOk queueDeclare(String queue, boolean durable, boolean exclusive, b
     /**
      * Declare a queue passively; i.e., check if it exists.  In AMQP
      * 0-9-1, all arguments aside from nowait are ignored; and sending
-     * nowait makes this method a no-op, so we default it to true.
+     * nowait makes this method a no-op, so we default it to false.
      * @see com.rabbitmq.client.AMQP.Queue.Declare
      * @see com.rabbitmq.client.AMQP.Queue.DeclareOk
      * @param queue the name of the queue