git: openjdk/jdk: 6603771: Nimbus L&F: Ctrl+F7 keybinding for Jinternal Frame throws a NPE.

[Prasanta Sadhukhan]

Changeset: 7465de45
Author:    Prasanta Sadhukhan <psadhukhan at openjdk.org>
Date:      2023-01-25 05:48:07 +0000
URL:       https://git.openjdk.org/jdk/commit/7465de453afac9499582cb8c7573bcdc988f623b

6603771: Nimbus L&F: Ctrl+F7 keybinding for Jinternal Frame throws a NPE.

Reviewed-by: abhiscxk, serb

! src/java.desktop/share/classes/javax/swing/plaf/basic/BasicDesktopPaneUI.java
+ test/jdk/javax/swing/JInternalFrame/JInternalFrameTest.java