FIX: Not passing correct `title` through to share

app/assets/javascripts/discourse/controllers/share.js.es6

@@ -5,8 +5,10 @@ import computed from 'ember-addons/ember-computed-decorators';
 export default Ember.Controller.extend({
   needs: ['topic'],
 
+  title: Ember.computed.alias('controllers.topic.model.title'),
+
   @computed('type', 'postNumber')
-  title(type, postNumber) {
+  shareTitle(type, postNumber) {
     if (type === 'topic') { return I18n.t('share.topic'); }
     if (postNumber) {
       return I18n.t('share.post', { postNumber });

app/assets/javascripts/discourse/templates/share.hbs

@@ -1,5 +1,5 @@
 {{#if link}}
-  <h3>{{title}}</h3>
+  <h3>{{shareTitle}}</h3>
 
   {{#if date}}
     <span class="date">{{displayDate}}</span>