MqttTopic isMatched method, some case result is not correct.

[wangdaowangdao]

1. As shown above, I think topicFilter should match topicName, but isMatched method returns false.

topicFilter = finance/stock/+/#
topicName = finance/stock/ibm
isMatched = false

2. In this case, isMatched' method is right.

topicFilter = finance/stock/+
topicName = finance/stock/ibm
isMatched = true

3. As shown above, i found if topicFilter' length is longer than topicName's length and topicFilter contains "+" and "#", the result is always false, even if the topicFiler except for "#" match topicName.