hg: jdk/client: 8230235: Rendering HTML with empty img attribute and documentBaseKey cause Exception

[pankaj.b.bansal at oracle.com]

Changeset: 1e563056dd3c
Author:    pbansal
Date:      2019-11-27 11:05 +0530
URL:       https://hg.openjdk.java.net/jdk/client/rev/1e563056dd3c

8230235: Rendering HTML with empty img attribute and documentBaseKey cause Exception
Reviewed-by: serb, aivanov

! src/java.desktop/share/classes/javax/swing/text/html/ImageView.java
+ test/jdk/javax/swing/text/html/TestJLabelWithHTMLText.java