is there a problem in NettyBackedChannelBuffer.setBytes(...)?

[icodegarden]

hi,I see the code for method setBytes in class com.alibaba.dubbo.remoting.transport.netty4.NettyBackedChannelBuffer.java which is below,is there a problem ?

[qinliujie]

This is really a bug, but it won't affect it at the moment, because I searched it, there is no place to use this method. please @zonghaishang check again

[zonghaishang]

I have checked that, @46557783 Could you make a pull request to fix it?