Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/regress/regress-798.js

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 var x = {};
 
 // Add property a with getter/setter.
 x.__defineGetter__("a", function() {
   try {
     y.x = 40;
   } catch (e) {
-    assertEquals(3, e.stack.split('\n').length); 
+    assertEquals(3, e.stack.split('\n').length);
   }
   return 40;
 });
 
 x.__defineSetter__("a", function(val) {
   try {
     y.x = 40;
   } catch(e) {
-    assertEquals(3, e.stack.split('\n').length); 
+    assertEquals(3, e.stack.split('\n').length);
   }
 });
 
 // Add property b with getter/setter.
 function getB() {
   try {
     y.x = 30;
   } catch (e) {
-    assertEquals(3, e.stack.split('\n').length); 
+    assertEquals(3, e.stack.split('\n').length);
   }
   return 30;
 }
 
 function setB(val) {
   try {
     y.x = 30;
   } catch(e) {
-    assertEquals(3, e.stack.split('\n').length); 
+    assertEquals(3, e.stack.split('\n').length);
   }
 }
 
 x.__defineGetter__("b", getB);
 x.__defineSetter__("b", setB);
 
 // Add property c with getter/setter.
 var descriptor  = {
   get: function() {
     try {
       y.x = 40;
     } catch (e) {
-      assertEquals(3, e.stack.split('\n').length); 
+      assertEquals(3, e.stack.split('\n').length);
     }
     return 40;
   },
   set: function(val) {
     try {
       y.x = 40;
     } catch(e) {
-      assertEquals(3, e.stack.split('\n').length); 
+      assertEquals(3, e.stack.split('\n').length);
     }
   }
 }
 
 Object.defineProperty(x, 'c', descriptor)
 
 // Check that the stack for an exception in a getter and setter produce the
-// expected stack height.   
+// expected stack height.
 x.a;
 x.b;
 x.c;
 x.a = 1;
 x.b = 1;
 x.c = 1;
 
 // Do the same with the getters/setters on the a prototype object.
 xx = {}
 xx.__proto__ = x
 
 xx.a;
 xx.b;
 xx.c;
 xx.a = 1;
 xx.b = 1;
 xx.c = 1;