[gnome-power-manager] Correct the polarity of the on-ac battery check when inhibiting the screensaver

[Richard Hughes <rhughes src gnome org>]

commit ce6319a4200002e09e6a2f0dc46d49bb34e9f094
Author: Richard Hughes <richard hughsie com>
Date:   Fri May 29 10:17:02 2009 +0100

    Correct the polarity of the on-ac battery check when inhibiting the screensaver
---
 src/gpm-manager.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/gpm-manager.c b/src/gpm-manager.c
index 5b45340..f4ad2c1 100644
--- a/src/gpm-manager.c
+++ b/src/gpm-manager.c
@@ -691,7 +691,7 @@ update_ac_throttle (GpmManager *manager)
 {
 	/* Throttle the manager when we are not on AC power so we don't
 	   waste the battery */
-	if (manager->priv->on_battery) {
+	if (!manager->priv->on_battery) {
 		if (manager->priv->screensaver_ac_throttle_id != 0) {
 			gpm_screensaver_remove_throttle (manager->priv->screensaver, manager->priv->screensaver_ac_throttle_id);
 			manager->priv->screensaver_ac_throttle_id = 0;