fix type in last commit

Author: plummercj

test/hotspot/jtreg/vmTestbase/nsk/jdi/EventRequest/hashCode/hashcode001.java

@@ -118,7 +118,7 @@ private static void execTest() {
             switch (i) {
 
                 case 0:
-                       ThreadReference thread = debuggee.threadByNameOrThrow(methodName());
+                       ThreadReference thread = debuggee.threadByNameOrThrow(methodName);
 
                        display(".....setting up StepRequest");
                        eventRequest = eventRequestManager.createStepRequest