[gnome-documents/gnome-3-28] trackerController: Don't submit queries until started

[Debarshi Ray <debarshir src gnome org>]

commit 83d884324c3a2576716ab7fab79cd654c2ac3b28
Author: Debarshi Ray <debarshir gnome org>
Date:   Tue Dec 12 16:35:22 2017 +0100

    trackerController: Don't submit queries until started
    
    This prevents a premature query when the TrackerController is
    instantiated.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791518

 src/trackerController.js | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/trackerController.js b/src/trackerController.js
index 05b7e89f..55f1343f 100644
--- a/src/trackerController.js
+++ b/src/trackerController.js
@@ -283,6 +283,10 @@ const TrackerController = new Lang.Class({
             return;
 
         this.sortBy = sortBy;
+
+        if (!this._isStarted)
+            return;
+
         this._refreshInternal(RefreshFlags.RESET_OFFSET);
     },