hg: jdk/client: 8211703: JInternalFrame : java.lang.AssertionError: cannot find the internal frame

[prasanta.sadhukhan at oracle.com]

Changeset: e448d58051ab
Author:    psadhukhan
Date:      2019-05-23 10:50 +0530
URL:       http://hg.openjdk.java.net/jdk/client/rev/e448d58051ab

8211703: JInternalFrame : java.lang.AssertionError: cannot find the internal frame
Reviewed-by: prr, serb

! src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/Metacity.java
! test/jdk/sanity/client/SwingSet/src/InternalFrameDemoTest.java