[meld] ui.statusbar: Delay popover construction to realize

[Kai Willadsen <kaiw src gnome org>]

commit dd6fefdd21eb3f16d566db1b626018359fbfb7a8
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Jan 6 07:23:41 2019 +1000

    ui.statusbar: Delay popover construction to realize
    
    There's no need to initialise these on initial status bar construction,
    particularly since one will go unused in all of our two-pane views.

 meld/ui/statusbar.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/meld/ui/statusbar.py b/meld/ui/statusbar.py
index be434984..f640efc8 100644
--- a/meld/ui/statusbar.py
+++ b/meld/ui/statusbar.py
@@ -124,7 +124,7 @@ class MeldStatusBar(Gtk.Statusbar):
     _line_column_text = _("Ln %i, Col %i")
 
     def __init__(self):
-        GObject.GObject.__init__(self)
+        super().__init__()
         self.props.margin = 0
         self.props.spacing = 6
 
@@ -135,6 +135,9 @@ class MeldStatusBar(Gtk.Statusbar):
         hbox.remove(label)
         hbox.pack_end(label, False, True, 0)
 
+    def do_realize(self):
+        Gtk.Statusbar.do_realize(self)
+
         self.box_box = Gtk.HBox(homogeneous=False, spacing=6)
         self.pack_end(self.box_box, False, True, 0)
         self.box_box.pack_end(