[evince] libview: Add check for pageless documents to ev_view_accessible_focus_changed

[Joanmarie Diggs <joanied src gnome org>]

commit c0ecc9564fceb12b3580adac3a1257d7feb2b87f
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Sep 27 23:40:22 2014 -0400

    libview: Add check for pageless documents to ev_view_accessible_focus_changed
    
    Without this check, Evince will crash when opening a document that, for
    whatever reason, has no pages.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=731046

 libview/ev-view-accessible.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libview/ev-view-accessible.c b/libview/ev-view-accessible.c
index ffc617c..7805219 100644
--- a/libview/ev-view-accessible.c
+++ b/libview/ev-view-accessible.c
@@ -450,7 +450,7 @@ ev_view_accessible_focus_changed (GtkWidget        *widget,
        g_return_val_if_fail (EV_IS_VIEW (widget), FALSE);
        g_return_val_if_fail (EV_IS_VIEW_ACCESSIBLE (self), FALSE);
 
-       if (self->priv->children == NULL)
+       if (self->priv->children == NULL || self->priv->children->len == 0)
                return FALSE;
 
        page_accessible = g_ptr_array_index (self->priv->children,