Update GenericMultipleBarcodeReader.as

[garybenade]

Added check for result of delegate.decode and returning if null.
This was causing the check (existingResult.getText() == result.getText() to fail resulting in an incorrect null return from the decodeMultiple function

[srowen]

OK, I can commit that, but this is just a mirror of the SVN repo so pull requests aren't directly usable. A patch and issue at code.google.com/p/zxing is the usual mechanism

[srowen]

Hmm wait a sec, what returns null? decode() shouldn't return null, and if something does, that's really the bug

[garybenade]

The delegate can throw an exception which will be caught and the function will return at that point allowing the next barcode to be decoded. The proper way to fix this would be to throw an exception in the delegate which will trigger the return in the catch but this effectively serves the same purpose. This code change is tested and fixes the problem.

[srowen]

Yes, that's how the whole code works, via the exceptions. If something is returning null instead, that should be fixed. I don't know this code and it's not supported, so you may want to fork and do what you want with it if you're not in a position to patch the broader issue.