Fix typo in r6697: Use assertThrows correctly in the added test regress-1122....

test/mjsunit/regress/regress-1122.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 33 matching lines @@
     source += arg;
   }
   source += ') + test_suffix';
   return eval(source);
 }
 
 assertEquals('prefix 4000 suffix', function_with_n_args(8000));
 assertEquals('prefix 9000 suffix', function_with_n_args(18000));
 assertEquals('prefix 16000 suffix', function_with_n_args(32000));
 
-assertThrows(function_with_n_args(35000));
-assertThrows(function_with_n_args(100000));
+assertThrows("function_with_n_args(35000)");
+assertThrows("function_with_n_args(100000)");