sd: fix typo in PresenterHelper

Otherwise we always use the switch-monitor icon for the restart-timer
button.

Change-Id: Icd2e4322285b1c73a104ce0ffada116b9cae0ad4

sd/source/ui/presenter/PresenterHelper.cxx

@@ -345,9 +345,9 @@ Reference<rendering::XBitmap> SAL_CALL PresenterHelper::loadBitmap (
         { "bitmaps/ButtonSwitchMonitorNormal.png",
           BMP_PRESENTERSCREEN_BUTTON_SWITCH_MONITOR_NORMAL },
         { "bitmaps/ButtonRestartTimerMouseOver.png",
-          BMP_PRESENTERSCREEN_BUTTON_SWITCH_MONITOR_MOUSE_OVER },
+          BMP_PRESENTERSCREEN_BUTTON_RESTART_TIMER_MOUSE_OVER },
         { "bitmaps/ButtonRestartTimerNormal.png",
-          BMP_PRESENTERSCREEN_BUTTON_SWITCH_MONITOR_NORMAL },
+          BMP_PRESENTERSCREEN_BUTTON_RESTART_TIMER_NORMAL },
         { "bitmaps/LabelMouseOverCenter.png",
           BMP_PRESENTERSCREEN_LABEL_MOUSE_OVER_CENTER },
         { "bitmaps/LabelMouseOverLeft.png",