[pitivi/1.0] mainwindow: Fix logo in the about window

[Thibault Saunier <tsaunier src gnome org>]

commit 155c9b34af085cfae76b2061be1062aaa1cbb411
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Sun Sep 23 21:52:51 2018 +0200

    mainwindow: Fix logo in the about window
    
    Should have been part of 13e7066b1c72369135773f94361cc5776eb66578
    
    Fixes #2242

 pitivi/mainwindow.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index 9efc2908..0af4a4e1 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -644,8 +644,7 @@ class MainWindow(Gtk.ApplicationWindow, Loggable):
         documenters = ["Jean-François Fortin Tam <nekohayo gmail com>", ]
         abt.set_documenters(documenters)
         abt.set_license_type(Gtk.License.LGPL_2_1)
-        abt.set_icon_name("pitivi")
-        abt.set_logo_icon_name("pitivi")
+        abt.set_logo_icon_name("org.pitivi.Pitivi")
         abt.connect("response", self._aboutResponseCb)
         abt.set_transient_for(self)
         abt.show()