Address review comments on Options.executable change.

runtime/bin/main.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 <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 160 matching lines @@
 
   // Get the executable name.
   *executable_name = argv[0];
 
   // Start the rest after the executable name.
   int i = 1;
 
   // Parse out the vm options.
   while ((i < argc) && IsValidFlag(argv[i], kPrefix, kPrefixLen)) {
     if (ProcessMainOptions(argv[i])) {
-      ++i;
+      i++;
     } else {
       vm_options->AddArgument(argv[i]);
-      ++i;
+      i++;
     }
   }
   if (generate_pprof_symbols_filename != NULL) {
     Dart_InitPprofSupport();
   }
 
   // Get the script name.
   if (i < argc) {
     *script_name = argv[i];
-    ++i;
+    i++;
   } else {
     return -1;
   }
 
   // Parse out options to be passed to dart main.
   while (i < argc) {
     dart_options->AddArgument(argv[i]);
-    i += 1;
+    i++;
   }
 
   return 0;
 }
 
 
 static Dart_Handle SetupRuntimeOptions(CommandLineOptions* options,
                                        const char* executable_name,
                                        const char* script_name) {
   int options_count = options->count();
@@ skipping 480 matching lines @@
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.
   Process::TerminateExitCodeHandler();
 
   free(const_cast<char*>(original_script_name));
   free(const_cast<char*>(original_working_directory));
   free(const_cast<char*>(original_script_url));
 
   return 0;
 }