[gnome-settings-daemon] power: Protect against a potential SIGFE

[Richard Hughes <rhughes src gnome org>]

commit d06b9cae10d4a482f76b32394334ebec6073751f
Author: Richard Hughes <richard hughsie com>
Date:   Fri Sep 16 09:15:35 2011 +0100

    power: Protect against a potential SIGFE
    
    This can only happen if all laptop batteries have zero energy_full.
    
    Resolves https://bugzilla.gnome.org/show_bug.cgi?id=659205

 plugins/power/gsd-power-manager.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/plugins/power/gsd-power-manager.c b/plugins/power/gsd-power-manager.c
index 4c29099..c1008dc 100644
--- a/plugins/power/gsd-power-manager.c
+++ b/plugins/power/gsd-power-manager.c
@@ -818,7 +818,8 @@ engine_update_composite_device (GsdPowerManager *manager,
         }
 
         /* use percentage weighted for each battery capacity */
-        percentage = 100.0 * energy_total / energy_full_total;
+        if (energy_full_total > 0.0)
+                percentage = 100.0 * energy_total / energy_full_total;
 
         /* set composite state */
         if (is_charging)