[9] Review request for 8078165: [macosx] NPE when attempting to get image from toolkit

[Anton Nashatyrev]

Hello,
    could you please review the following simple fix:
fix: http://cr.openjdk.java.net/~anashaty/8078165/webrev.00/ 
<http://cr.openjdk.java.net/%7Eanashaty/8078165/webrev.00/>
bug: https://bugs.openjdk.java.net/browse/JDK-8078165

    Problem: on MacOS Toolkit.getImage() throws NPE under some 
circumstances when LWCToolkit.getScaledImageName() returns null.

    Fix: check for null

Thanks!
Anton.