- Remove unused variable.

runtime/vm/code_generator.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/code_generator.h"
 
 #include "vm/assembler_macros.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 733 matching lines @@
   String& function_name = String::Handle();
   DartFrameIterator iterator;
   StackFrame* caller_frame = iterator.NextFrame();
   ASSERT(caller_frame != NULL);
   CodePatcher::GetInstanceCallAt(caller_frame->pc(),
                                  &function_name,
                                  &num_arguments,
                                  &num_named_arguments,
                                  &target);
   ASSERT(function_name.IsSymbol());
-  Class& receiver_class = Class::Handle();
-  if (receiver.IsNull()) {
-    // TODO(srdjan): Clarify behavior of null objects.
-    receiver_class = isolate->object_store()->object_class();
-  } else {
-    receiver_class = receiver.clazz();
-  }
 
   Function& function = Function::Handle();
   function = Resolver::ResolveDynamic(receiver,
                                       function_name,
                                       num_arguments,
                                       num_named_arguments);
   if (function.IsNull()) {
     return Code::null();
   } else {
     if (!function.HasCode()) {
@@ skipping 843 matching lines @@
   function.set_usage_counter(0);
   function.set_deoptimization_counter(function.deoptimization_counter() + 1);
 
   if (function.HasOptimizedCode()) {
     function.SwitchToUnoptimizedCode();
   }
 }
 END_LEAF_RUNTIME_ENTRY
 
 }  // namespace dart