[gnome-power-manager] Add support for unknown state

[Richard Hughes <rhughes src gnome org>]

commit 62082ef0021dab1b3be8b57143a5c2d3dbd463af
Author: Julien Danjou <julien danjou info>
Date:   Sun Aug 26 15:49:29 2012 +0200

    Add support for unknown state
    
    Signed-off-by: Julien Danjou <julien danjou info>
    Signed-off-by: Richard Hughes <richard hughsie com>

 src/gpm-statistics.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/gpm-statistics.c b/src/gpm-statistics.c
index 30cd559..3f7c1c9 100644
--- a/src/gpm-statistics.c
+++ b/src/gpm-statistics.c
@@ -412,6 +412,10 @@ gpm_device_state_to_localised_string (UpDeviceState state)
 		/* TRANSLATORS: battery state */
 		state_string = _("Waiting to discharge");
 		break;
+	case UP_DEVICE_STATE_UNKNOWN:
+		/* TRANSLATORS: battery state */
+		state_string = _("Unknown");
+		break;
 	default:
 		g_assert_not_reached ();
 		break;