Base64PackedStreamFactory writeString method val param is null throw java.lang.NullPointerException

[GoogleCodeExporter]

java.lang.NullPointerException
    at com.googlecode.gwtstreamer.client.impl.Base64PackedStreamFactory$Base64Writer.writeString(Base64PackedStreamFactory.java:199)
    at com.googlecode.gwtstreamer.client.impl.WriteContext.writeString(WriteContext.java:250)
    at com.efounder.gwt.streamer.JResponseObjectStreamer.writeObject(JResponseObjectStreamer.java:30)
    at com.googlecode.gwtstreamer.client.impl.WriteContext.writeObject(WriteContext.java:129)
    at com.googlecode.gwtstreamer.client.Streamer.writeObject(Streamer.java:259)
    at com.googlecode.gwtstreamer.client.Streamer.toString(Streamer.java:215)

Original issue reported on code.google.com by flycloud...@gmail.com on 28 Feb 2015 at 9:25