Improve error handling in the process library.

runtime/bin/process_script.h

 // Copyright (c) 2011, 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.
 
 #ifndef BIN_PROCESS_SCRIPT_H_
 #define BIN_PROCESS_SCRIPT_H_
 
-#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 class CommandLineOptions {
  public:
   explicit CommandLineOptions(int max_count)
       : count_(0), max_count_(max_count), arguments_(NULL) {
     static const int kWordSize = sizeof(intptr_t);
     arguments_ = reinterpret_cast<char **>(malloc(max_count * kWordSize));
@@ skipping 32 matching lines @@
 
   int count_;
   int max_count_;
   char** arguments_;
 };
 
 
 extern Dart_Result LoadScript(const char* script_name);
 
 #endif  // BIN_PROCESS_SCRIPT_H_