[9] Review request for 8173853: IllegalArgumentException in java.awt.image.ReplicateScaleFilter

[dmitry markov]

Hello,

Could you review a fix for jdk9, please?

        bug: https://bugs.openjdk.java.net/browse/JDK-8173853
        webrev: http://cr.openjdk.java.net/~dmarkov/8173853/webrev.00/

Problem description:
Sometimes XQueryBestCursor may return zero-dimension to the code inside 
XCustomCursor.getBestCursorSize(). As a result the subsequent invocation of 
CustomCursor constructor will fail with IllegalArgumentException during scaling 
of the image.

Fix:
It is necessary to avoid scaling if getBestCursorSize() returns zero-dimension.

Thanks,
Dmitry