fix crash with async workers in napi addons

Author: vektor

patches/async_addon.patch

@@ -0,0 +1,13 @@
+diff --git forkSrcPrefix/src/node_api.cc forkDstPrefix/src/node_api.cc
+index a019a1826c6ce72a5f05d0bee01ece2089126b09..4694d3ad271a7a46e28f4c9bf4b8266bb0eca56e 100644
+--- forkSrcPrefix/src/node_api.cc
++++ forkDstPrefix/src/node_api.cc
+@@ -1201,7 +1201,7 @@ class Work : public node::AsyncResource, public node::ThreadPoolWork {
+     // Establish a handle scope here so that every callback doesn't have to.
+     // Also it is needed for the exception-handling below.
+     v8::HandleScope scope(_env->isolate);
+-
++    v8::Context::Scope context_scope(_env->context());
+     CallbackScope callback_scope(this);
+ 
+     _env->CallbackIntoModule<true>([&](napi_env env) {