Fix overflow check in mul-i which was missing since r14322

src/hydrogen-instructions.cc

 // Copyright 2012 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 1433 matching lines @@
 
 HValue* HSub::Canonicalize() {
   if (IsIdentityOperation(left(), right(), 0)) return left();
   return HArithmeticBinaryOperation::Canonicalize();
 }
 
 
 HValue* HMul::Canonicalize() {
   if (IsIdentityOperation(left(), right(), 1)) return left();
   if (IsIdentityOperation(right(), left(), 1)) return right();
-  return HArithmeticBinaryOperation::Canonicalize();
+  return this;
 }
 
 
 HValue* HChange::Canonicalize() {
   return (from().Equals(to())) ? value() : this;
 }
 
 
 HValue* HWrapReceiver::Canonicalize() {
   if (HasNoUses()) return NULL;
@@ skipping 2139 matching lines @@
 
 
 void HCheckFunction::Verify() {
   HInstruction::Verify();
   ASSERT(HasNoUses());
 }
 
 #endif
 
 } }  // namespace v8::internal