[cp-patches] FYI: Made PixelGrabber more robust

[Roman Kennke]

I added a try catch clause in the pixel grabber thread that lets the
PixelGrabber exit gracefully when an exception is thrown in the
ImageProducer. Most importantly it calls notifyAll() to release waiting
Threads. Also I added some null pointer checks.

2005-08-18  Roman Kennke  <address@hidden>

        * java/awt/image/PixelGrabber.java
        (constructors): Check if the ImageProducer is null and throw
        a NPE if that is the case.
        (startGrabbing): When an exception is thrown in the grabber
        thread, exit gracefully and notify the waiting threads.
        (imageComplete): Only call ip.removeConsumer() if ip is not
        null.

/Roman

PixelGrabber.diff
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