fix else fragment not destoryed on teardown (fix vuejs#2206)

yyx990803 · yyx990803 · commit 0fc2e960ab4f · 2016-01-28T18:16:04.000-08:00
diff --git a/src/directives/public/if.js b/src/directives/public/if.js
@@ -69,5 +69,8 @@ export default {
     if (this.frag) {
       this.frag.destroy()
     }
+    if (this.elseFrag) {
+      this.elseFrag.destroy()
+    }
   }
 }
