Add test that passes invalid arguments to socket methods and fix

runtime/bin/process.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 "bin/dartutils.h"
 #include "bin/process.h"
 
 #include "include/dart_api.h"
 
 // Extract an array of C strings from a list of Dart strings.
@@ skipping 78 matching lines @@
   Dart_Handle environment = Dart_GetNativeArgument(args, 4);
   intptr_t environment_length = 0;
   char** string_environment = NULL;
   if (!Dart_IsNull(environment)) {
     string_environment =
         ExtractCStringList(environment,
                            status_handle,
                            "Environment values must be builtin strings",
                            &environment_length);
     if (string_environment == NULL) {
+      delete[] string_args;
       Dart_SetReturnValue(args, Dart_NewBoolean(false));
       Dart_ExitScope();
       return;
     }
   }
   Dart_Handle in_handle = Dart_GetNativeArgument(args, 5);
   Dart_Handle out_handle = Dart_GetNativeArgument(args, 6);
   Dart_Handle err_handle = Dart_GetNativeArgument(args, 7);
   Dart_Handle exit_handle = Dart_GetNativeArgument(args, 8);
   intptr_t pid = -1;
@@ skipping 34 matching lines @@
 }
 
 
 void FUNCTION_NAME(Process_Kill)(Dart_NativeArguments args) {
   Dart_EnterScope();
   intptr_t pid = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
   bool success = Process::Kill(pid);
   Dart_SetReturnValue(args, Dart_NewBoolean(success));
   Dart_ExitScope();
 }