Narrow test disabling to Windows

Signed-off-by: Matt Sicker <[email protected]>

Author: jvz

log4j-core/src/test/java/org/apache/logging/log4j/core/filter/MutableThreadContextMapFilterTest.java

@@ -24,8 +24,9 @@
 import org.apache.logging.log4j.test.appender.ListAppender;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledOnOs;
+import org.junit.jupiter.api.condition.OS;
 
 import java.io.File;
 import java.io.IOException;
@@ -40,7 +41,7 @@
 /**
  * Unit test for simple App.
  */
-@Disabled("https://issues.apache.org/jira/browse/LOG4J2-3512")
+@DisabledOnOs(value = OS.WINDOWS, disabledReason = "https://issues.apache.org/jira/browse/LOG4J2-3512")
 public class MutableThreadContextMapFilterTest implements MutableThreadContextMapFilter.FilterConfigUpdateListener {
 
     static final String CONFIG = "log4j2-mutableFilter.xml";