[gpointing-device-settings] Fix crash.

[Hiroyuki Ikezoe <hiikezoe src gnome org>]

commit 70add06dec8413965f3e98b6ba9a3c82168ea72c
Author: Hiroyuki Ikezoe <poincare ikezoe net>
Date:   Tue Mar 16 19:56:17 2010 +0900

    Fix crash.
    
    We need to get xinput property if there is no gconf value for tapping time.
    
    Fix for #613022.

 modules/gpds-touchpad-ui.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/modules/gpds-touchpad-ui.c b/modules/gpds-touchpad-ui.c
index 3bbcda6..a1cd31b 100644
--- a/modules/gpds-touchpad-ui.c
+++ b/modules/gpds-touchpad-ui.c
@@ -1067,8 +1067,14 @@ set_tapping_time_from_preference (GpdsUI *ui, GtkBuilder *builder)
         }
     }
 
-    if (!gpds_ui_get_gconf_int(ui, GPDS_TOUCHPAD_TAP_TIME_KEY, &value))
+    if (!gpds_ui_get_gconf_int(ui, GPDS_TOUCHPAD_TAP_TIME_KEY, &value) && !values) {
+        if (!gpds_xinput_ui_get_xinput_int_property(GPDS_XINPUT_UI(ui),
+                                                    GPDS_TOUCHPAD_TAP_TIME,
+                                                    &values, &n_values)) {
+            return;
+        }
         value = values[0];
+    }
 
     double_value = value;
     object = gpds_ui_get_ui_object_by_name(GPDS_UI(ui), "tapping_time_scale");