Fix "unreachable code" warnings (MSVC warning 4702) in ppapi/.

ppapi/proxy/serialized_var.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/serialized_var.h"
 
 #include "base/logging.h"
 #include "ipc/ipc_message_utils.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/dispatcher.h"
@@ skipping 50 matching lines @@
       break;
   }
 }
 
 PP_Var SerializedVar::Inner::GetVar() {
   DCHECK(serialization_rules_.get());
 
 #if defined(NACL_WIN64)
   NOTREACHED();
   return PP_MakeUndefined();
-#endif
-
+#else
   if (raw_var_data_.get()) {
     var_ = raw_var_data_->CreatePPVar(instance_);
     raw_var_data_.reset(NULL);
   }
 
   return var_;
+#endif
 }
 
 void SerializedVar::Inner::SetVar(PP_Var var) {
   // Sanity check, when updating the var we should have received a
   // serialization rules pointer already.
   DCHECK(serialization_rules_.get());
   var_ = var;
   raw_var_data_.reset(NULL);
 }
 
@@ skipping 369 matching lines @@
     const std::string& str) {
   inner_->ForceSetVarValueForTest(StringVar::StringToPPVar(str));
 }
 
 SerializedVarTestReader::SerializedVarTestReader(const SerializedVar& var)
     : SerializedVar(var) {
 }
 
 }  // namespace proxy
 }  // namespace ppapi