Make more JS files beter match the coding standard.

test/mjsunit/try-finally-nested.js

 // Copyright 2008 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 23 matching lines @@
       try {
         break;
       } finally {
         executed = true;
       }
       assertTrue(false, "should not reach here");
     }
     assertTrue(executed, "finally block executed");
   }
   return 87;
-};
+}
 
 assertEquals(42, f());