Don't use IsolateData for the exit hook as multiple embedders share the dart/bin while using differ…

runtime/bin/process.cc

Index: runtime/bin/process.cc
diff --git a/runtime/bin/process.cc b/runtime/bin/process.cc
index ff88201bc12d9cc7a6b67cf5e55b05f839461f2c..e22e07c4fabd223bbd9d659332eb44dd54b96d2b 100644
--- a/runtime/bin/process.cc
+++ b/runtime/bin/process.cc
@@ -246,11 +246,7 @@ void FUNCTION_NAME(Process_Exit)(Dart_NativeArguments args) {
   int64_t status = 0;
   // Ignore result if passing invalid argument and just exit 0.
   DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 0), &status);
-  IsolateData* isolate_data =
-      reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
-  if (isolate_data->exit_hook() != NULL) {
-    isolate_data->exit_hook()(status);
-  }
+  Process::RunExitHook(status);
   Dart_ExitIsolate();
   Platform::Exit(static_cast<int>(status));
 }