[gnome-documents/gnome-3-20] view: don't use invalid iters when activating first result

[Debarshi Ray <debarshir src gnome org>]

commit 6d5f9023bf23b1f6765f8439faeb4021b5abf24f
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Aug 7 14:58:35 2016 -0700

    view: don't use invalid iters when activating first result

 src/view.js |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/view.js b/src/view.js
index f9d9b1d..56e0be9 100644
--- a/src/view.js
+++ b/src/view.js
@@ -461,8 +461,8 @@ const ViewContainer = new Lang.Class({
     _getFirstDocument: function() {
         let doc = null;
 
-        let iter = this._model.get_iter_first()[1];
-        if (iter) {
+        let [success, iter] = this._model.get_iter_first();
+        if (success) {
             let id = this._model.get_value(iter, Gd.MainColumns.ID);
             doc = Application.documentManager.getItemById(id);
         }