[Courgette] Refactor: Manage AssemblyProgram and EncodedProgram with scoped_ptr.

testing/libfuzzer/fuzzers/courgette_fuzzer.cc

 // Copyright (c) 2015 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 "base/memory/scoped_ptr.h"
 #include "courgette/assembly_program.h"
 #include "courgette/courgette.h"
 #include "courgette/encoded_program.h"
 
 // Entry point for LibFuzzer.
 extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data, size_t size) {
-  courgette::AssemblyProgram* prog;
+  scoped_ptr<courgette::AssemblyProgram> prog;
   courgette::Status status =
       courgette::ParseDetectedExecutable(data, size, &prog);
   if (status != courgette::C_OK) {
     return 0;
   }
   scoped_ptr<courgette::EncodedProgram> enc_prog(prog->Encode());
-  courgette::DeleteAssemblyProgram(prog);
   return 0;
 }