Merge lp:~gary-lasker/software-center/fix-crash-lp970157 into lp:software-center

[Gary Lasker]

Small fix for a crash that can happen during the installed view treeview initialization. There should be no side effects from this fix as even if the vadustment value is None, with this fix the scroll will be set at the top, right where it should be for initialization anyway.

[Michael Vogt (mvo)]

Thanks, looks good!

review: Approve

=== modified file 'softwarecenter/ui/gtk3/panes/installedpane.py'
--- softwarecenter/ui/gtk3/panes/installedpane.py	2012-04-04 16:03:25 +0000
+++ softwarecenter/ui/gtk3/panes/installedpane.py	2012-04-06 22:51:20 +0000
@@ -340,8 +340,10 @@
         for ind in expanded_rows:
             path = Gtk.TreePath.new_from_string(ind)
             self.app_view.tree_view.expand_row(path, False)
-        self.app_view.tree_view_scroll.get_vadjustment().set_lower(vadj)
-        self.app_view.tree_view_scroll.get_vadjustment().set_value(vadj)
+        va = self.app_view.tree_view_scroll.get_vadjustment()
+        if va:
+            va.set_lower(vadj)
+            va.set_value(vadj)
 
     #~ @interrupt_build_and_wait
     def _build_categorised_installedview(self, keep_state=False):