Hello.
Please review the fix for jdk 13.

Bug: https://bugs.openjdk.java.net/browse/JDK-8215756
Webrev: http://cr.openjdk.java.net/~serb/8215756/webrev.00

Two memory leaks were fixed:

 - AWTView.m: we should release the NSTrackingArea, usually we do this
       when we change NSTrackingArea from one to another:
       
http://hg.openjdk.java.net/jdk/jdk/file/3791fee4df3b/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m#l437
       But we also need to do this when the window is deallocated
 - AWTWindow.m: We have a JNFWeakJObjectWrapper which holds the reference to 
the java object,
       when the window is deallocated we clear the reference to the java 
object, but
       we also need to release the JNFWeakJObjectWrapper object itself

I have checked by the Instruments that the test attached to the bug will not 
produce any other leaks after the fix.


--
Best regards, Sergey.

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