Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/debug-references.js

Index: test/mjsunit/debug-references.js
diff --git a/test/mjsunit/debug-references.js b/test/mjsunit/debug-references.js
index ab6c6292e35a29e71f57b831f10279fc456c9600..763e354fc801597ad0b24a589bb4400c77c59555 100644
--- a/test/mjsunit/debug-references.js
+++ b/test/mjsunit/debug-references.js
@@ -52,7 +52,7 @@ function testRequest(dcp, arguments, success, count) {
   } else {
     request = '{' + base_request + '}'
   }
-  
+
   // Process the request and check expectation.
   var response = safeEval(dcp.processDebugJSONRequest(request));
   if (success) {
@@ -88,7 +88,7 @@ function listener(event, exec_state, event_data, data) {
     var response = safeEval(dcp.processDebugJSONRequest(evaluate_point));
     assertTrue(response.success, "Evaluation of Point failed");
     var handle = response.body.handle;
-    
+
     // Test some legal references requests.
     testRequest(dcp, '{"handle":' + handle + ',"type":"referencedBy"}', true);
     testRequest(dcp, '{"handle":' + handle + ',"type":"constructedBy"}',