Scanning multiple barcodes in an Image with Zxing ByQuadrantReader : Nullpointer

[Pasan manudul Amarasiri]

Posted my issue in Stackoverflow(https://stackoverflow.com/questions/52928679/scanning-multiple-barcodes-in-an-image-with-zxing-byquadrantreader-nullpointer) as well.

I'm stuck. and can't finalize code without knowing the real cause.

Issue in short.

When using ByQuadrantReader for multiple barcode scanning in one image, a Null pointer is thrown at https://github.com/zxing/zxing/blob/master/core/src/main/java/com/google/zxing/multi/ByQuadrantReader.java Line number 110.
I downloaded source code added an optional null check there. Then its working fine. Appreciate if someone can verify whether this is a bug or something i did wrong.