fixed a compiling error and change tabs to spaces

demo_view_benchmark.c:125:18: error: static declaration of
'_benchmark_onshow' follows non-static declaration
demo_view_benchmark.c:87:9: note: previous implicit declaration of
'_benchmark_onshow' was here

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2277 bbd45198-f89e-11dd-88c7-29a3b14d5316

examples/gui/demo_view_benchmark.c

@@ -12,6 +12,13 @@ static int running = 0;
 static rt_tick_t ticks;
 static long long area;
 
+static rt_bool_t _benchmark_onshow(struct rtgui_object *obj, struct rtgui_event *ev)
+{
+    rtgui_widget_focus(RTGUI_WIDGET(obj));
+
+    return RT_TRUE;
+}
+
 void _onidle(struct rtgui_object *object, rtgui_event_t *event)
 {
     rtgui_color_t color;
@@ -111,6 +118,7 @@ rt_bool_t benchmark_event_handler(struct rtgui_object *object, rtgui_event_t *ev
 
             running = !running;
         }
+
         return RT_TRUE;
     }
     else
@@ -122,12 +130,6 @@ rt_bool_t benchmark_event_handler(struct rtgui_object *object, rtgui_event_t *ev
     return RT_FALSE;
 }
 
-static rt_bool_t _benchmark_onshow(struct rtgui_object *obj, struct rtgui_event *ev)
-{
-    rtgui_widget_focus(RTGUI_WIDGET(obj));
-    return RT_TRUE;
-}
-
 rtgui_container_t *demo_view_benchmark(void)
 {
     srand(100);