hg: jdk9/client/jdk: 4991647: PNGMetadata.getAsTree() sets bitDepth to invalid value

[mikhail.cherkasov at oracle.com]

Changeset: 6c875efda606
Author:    mcherkas
Date:      2014-07-10 18:46 +0400
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/6c875efda606

4991647: PNGMetadata.getAsTree() sets bitDepth to invalid value
Reviewed-by: prr, bae

! src/share/classes/com/sun/imageio/plugins/png/PNGMetadata.java
+ test/javax/imageio/plugins/png/PngDitDepthTest.java