Make more JS files beter match the coding standard.

test/mjsunit/regress/regress-1521.js

 // Copyright 2011 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 22 matching lines @@
     throw new Error();
   } catch (e) {
     var y = {f: 1};
     var f = function () {
       var z = y;
       var g = function () {
         if (y.f === z.f) return x;
       };
       %OptimizeFunctionOnNextCall(g);
       return g;
-    }
+    };
     assertEquals(3, f()());
   }
 }
 
 test(3);