红外场景触发链表删除时，调整free位置

midware/midware/scene/kk_scene_handle.c

@@ -609,12 +609,11 @@ int bodySensor_delete(int scene_id)
 		if(ptr->scene_id==scene_id){
 
 			if(pre!=NULL){
-				free(ptr);
 				pre->next = ptr->next;
 			}else{
-				free(ptr);
 				pBodySensor = NULL;
 			}
+			free(ptr);
 			return 1;
 		}
 		pre = ptr;