[gnome-shell/gnome-3-28] search: Cancel search provider operations on clear

[Florian Müllner <fmuellner src gnome org>]

commit da7cd2807fa9090805c0b82a9ea480e32086c1c8
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Thu Aug 23 18:14:38 2018 +0200

    search: Cancel search provider operations on clear
    
    Ensure that the search provider operations (just getResultMetas requests
    in the current implementation) in progress are properly cancelled when we
    clear the UI, otherwise returned results might still be added when not
    needed.
    
    This is triggered for each provider by the SearchResults reset.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/205

 js/ui/search.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/js/ui/search.js b/js/ui/search.js
index 1fb54b4c9..804be9593 100644
--- a/js/ui/search.js
+++ b/js/ui/search.js
@@ -192,6 +192,7 @@ var SearchResultsBase = new Lang.Class({
     },
 
     clear() {
+        this._cancellable.cancel();
         for (let resultId in this._resultDisplays)
             this._resultDisplays[resultId].actor.destroy();
         this._resultDisplays = {};