Fixup emit-state-change

src/components/emit-state-change.js

@@ -23,11 +23,14 @@ AFRAME.registerComponent("emit-state-change", {
   },
 
   update() {
+    this.el.removeEventListener("stateadded", this.stateadded);
+    this.el.removeEventListener("stateremoved", this.stateremoved);
+
     if (this.data.transform === "rising") {
       this.el.addEventListener("stateadded", this.stateadded);
     }
     if (this.data.transform === "falling") {
-      this.el.addEventListener("stateremoved", this.stateadded);
+      this.el.addEventListener("stateremoved", this.stateremoved);
     }
   }
 });