Fix script init error handling.

Change-Id: I7ceb0af4dfd12db0274985ff658f678d7af829ff
diff --git a/rsScript.h b/rsScript.h
index abb55b8..976ae78 100644
--- a/rsScript.h
+++ b/rsScript.h
@@ -85,6 +85,7 @@
     virtual void setupScript(Context *rsc) = 0;
     virtual uint32_t run(Context *) = 0;
 protected:
+    bool mInitialized;
     ObjectBaseRef<Allocation> *mSlots;
     ObjectBaseRef<const Type> *mTypes;