Coverity fixes to keep coverity quiet....

courgette/courgette_minimal_tool.cc

 // Copyright (c) 2009 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.
 
 // 'courgette_minimal_tool' is not meant to be a serious command-line tool.  It
 // has the minimum logic to apply a Courgette patch to a file.  The main purpose
 // is to monitor the code size of the patcher.
 
 #include <string>
 
@@ skipping 33 matching lines @@
   courgette::Status status =
       courgette::ApplyEnsemblePatch(argv[1], argv[2], argv[3]);
 
   if (status != courgette::C_OK) {
     if (status == courgette::C_READ_OPEN_ERROR) Problem("Can't open file.");
     if (status == courgette::C_WRITE_OPEN_ERROR) Problem("Can't open file.");
     if (status == courgette::C_READ_ERROR) Problem("Can't read from file.");
     if (status == courgette::C_WRITE_ERROR) Problem("Can't write to file.");
     Problem("patch failed.");
   }
+
+  return 0;
 }