8367795: HeadlessMalfunctionTest may fail due to timeout

Reviewed-by: prr

Author: mrserb

test/jdk/java/awt/Headless/HeadlessMalfunctionTest.java

@@ -38,7 +38,7 @@
  * @run driver  jdk.test.lib.helpers.ClassFileInstaller
  *              HeadlessMalfunctionAgent
  *              HeadlessMalfunctionAgent$1
- * @run driver HeadlessMalfunctionTest
+ * @run driver/timeout=240 HeadlessMalfunctionTest
  */
 public class HeadlessMalfunctionTest {