8313193: ProblemList java/util/concurrent/SynchronousQueue/Fairness.java on X64

Reviewed-by: rriggs

Author: Daniel D. Daugherty

test/jdk/ProblemList.txt

@@ -708,6 +708,7 @@ java/util/Locale/LocaleProvidersRun.java                        8268379 macosx-x
 sun/util/locale/provider/CalendarDataRegression.java            8268379 macosx-x64
 java/util/concurrent/forkjoin/AsyncShutdownNow.java             8286352 linux-all,windows-x64
 java/util/concurrent/ExecutorService/CloseTest.java             8288899 macosx-aarch64
+java/util/concurrent/SynchronousQueue/Fairness.java             8300663 generic-x64
 
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