mozjs_sys 0.67.1

System crate for the Mozilla SpiderMonkey JavaScript engine.
commit a2565ba38e1384ad804d7457804bcc7a86f3b38d
Author: Josh Matthews <josh@joshmatthews.net>
Date:   Tue Apr 2 14:13:03 2019 -0400

    Work around rust-bindgen#380 for debugmozjs builds.

diff --git a/mozjs/mfbt/GuardObjects.h b/mozjs/mfbt/GuardObjects.h
index 48015f53c5..7592364e33 100644
--- a/mozjs/mfbt/GuardObjects.h
+++ b/mozjs/mfbt/GuardObjects.h
@@ -96,7 +96,7 @@ class GuardObjectNotifier {
   }
 };
 
-class GuardObjectNotificationReceiver {
+class alignas(8) GuardObjectNotificationReceiver {
  private:
   bool mStatementDone;