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window: Fix segault on zooming operations

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When virt-viewer is "Waiting for guest domain to start" and
the Ctrl- or Ctrl+ keys are pressed to zoom the blank display
virt-viewer will crash in virt_viewer_display_get_desktop_size
because of a NULL display pointer. To reproduce start virt-viewer
on a VM not running and zoom the display.

Signed-off-by: Charles Arnold <carnold@suse.com>
Acked-by: Fabiano Fidêncio <fidencio@redhat.com>
Acked-by: Pavel Grunt <pgrunt@redhat.com>
This commit is contained in:
Charles Arnold 2016-06-20 17:02:09 +02:00 committed by Fabiano Fidêncio
parent 18e0fa27e3
commit b64b58b971
1 changed files with 2 additions and 0 deletions
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2
src/virt-viewer-window.c
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@ -378,6 +378,8 @@ virt_viewer_window_get_real_zoom_level(VirtViewerWindow *self)
GtkAllocation allocation;
guint width, height;
g_return_val_if_fail(self->priv->display != NULL, 100);
gtk_widget_get_allocation(GTK_WIDGET(self->priv->display), &allocation);
virt_viewer_display_get_desktop_size(self->priv->display, &width, &height);