[polari] thumbnailer: Handle authentication requests

[Florian Müllner <fmuellner src gnome org>]

commit ac8e5e4be1a387630a93bcd720192938cb0018ea
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Dec 16 03:20:48 2019 +0100

    thumbnailer: Handle authentication requests
    
    If a URL requires authentication, we currently wait indefinitely
    as nothing provides the requested credential.
    
    Fix this by cancelling all authentication requests immediately.
    
    https://gitlab.gnome.org/GNOME/polari/merge_requests/139

 src/thumbnailer.js | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/thumbnailer.js b/src/thumbnailer.js
index 3640280..34eddd5 100644
--- a/src/thumbnailer.js
+++ b/src/thumbnailer.js
@@ -28,6 +28,11 @@ let PreviewWindow = GObject.registerClass({
         });
         this.add(this._view);
 
+        this._view.connect('authenticate', (view, request) => {
+            request.cancel();
+            return true;
+        });
+
         this._view.connect('notify::is-loading',
             this._onLoadingChanged.bind(this));
         this._view.load_uri(this.uri);