8337810: ProblemList BasicDirectoryModel/LoaderThreadCount.java on Windows

Backport-of: f92c60e1a9968620cbc92b52aa546b57c09da487

Author: GoeLin

test/jdk/ProblemList.txt

@@ -642,6 +642,7 @@ javax/sound/sampled/Clip/ClipIsRunningAfterStop.java 8307574 linux-x64
 # jdk_swing
 
 javax/swing/plaf/basic/BasicTextUI/8001470/bug8001470.java 8233177 linux-all,windows-all
+javax/swing/plaf/basic/BasicDirectoryModel/LoaderThreadCount.java 8333880 windows-all
 
 javax/swing/JFrame/MaximizeWindowTest.java 8321289 linux-all
 javax/swing/JWindow/ShapedAndTranslucentWindows/ShapedTranslucentPerPixelTranslucentGradient.java 8233582 linux-all