Fix typo in r19923 (bounds check offset propagation)

test/mjsunit/regress/regress-crbug-352929.js

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+var dummy = new Int32Array(100);
+array = new Int32Array(100);
+var dummy2 = new Int32Array(100);
+
+array[-17] = 0;
+function fun(base,cond) {
+  array[base - 1] = 1;
+  array[base - 2] = 2;
+  if (cond) {
+    array[base - 4] = 3;
+    array[base - 5] = 4;
+  } else {
+    array[base - 6] = 5;
+    array[base - 100] = 777;
+  }
+}
+fun(5,true);
+fun(7,false);
+%OptimizeFunctionOnNextCall(fun);
+fun(7,false);
+
+for (var i = 0; i < dummy.length; i++) {
+  assertEquals(0, dummy[i]);
+}
+for (var i = 0; i < dummy2.length; i++) {
+  assertEquals(0, dummy2[i]);
+}