Merge pull request #42 from yappbox/bug/stop-listening

When recomputing {{emitter-action}} call stopListening *before* overwriting local properties

Author: lukemelia

addon/helpers/emitter-action.js

@@ -8,11 +8,11 @@ export default class extends Helper {
     assert('[emitter-action helper] Must specify an emitter', emitter);
     assert('[emitter-action helper] Must specify an eventName', eventName);
     assert('[emitter-action helper] Must specify an action', action);
+    this.stopListening();
     this.emitter = emitter;
     this.eventName = eventName;
     this.handler = action;
 
-    this.stopListening();
     this.startListening();
   }