8195824: tools/launcher/HelpFlagsTest.java fails with java.lang.AssertionError

Also re-enable test.

Reviewed-by: dholmes, ksrini

test/jdk/ProblemList.txt

diff --git a/test/jdk/ProblemList.txt b/test/jdk/ProblemList.txt
index 490e87d..4ed666e 100644
--- a/test/jdk/ProblemList.txt
+++ b/test/jdk/ProblemList.txt
@@ -317,8 +317,6 @@
 
 tools/launcher/FXLauncherTest.java                              8068049 linux-all,macosx-all
 
-tools/launcher/HelpFlagsTest.java                               8195824 windows-all
-
 tools/jimage/JImageExtractTest.java                             8170120 generic-all
 tools/jimage/JImageListTest.java                                8170120 generic-all
 tools/jimage/JImageVerifyTest.java                              8170120 generic-all

test/jdk/tools/launcher/HelpFlagsTest.java

diff --git a/test/jdk/tools/launcher/HelpFlagsTest.java b/test/jdk/tools/launcher/HelpFlagsTest.java
index 4bd9e50..5426333 100644
--- a/test/jdk/tools/launcher/HelpFlagsTest.java
+++ b/test/jdk/tools/launcher/HelpFlagsTest.java
@@ -75,6 +75,7 @@
         "klist",
         "ktab",
         // Oracle proprietary tools without help message.
+        "javacpl",
         "jmc",
         "jweblauncher",
         "jcontrol",