Viewports dont necessarily have children lines, so make sure there is one or it will crash

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28245 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 2 deletions

diff --git a/apps/gui/skin_engine/skin_render.c b/apps/gui/skin_engine/skin_render.c
index 9b86380ade..b3e9c74825 100644
--- a/apps/gui/skin_engine/skin_render.c
+++ b/apps/gui/skin_engine/skin_render.c
@@ -700,8 +700,9 @@ void skin_render(struct gui_wps *gwps, unsigned refresh_mode)
             display->clear_viewport();
         }
         /* render */
-        skin_render_viewport(viewport->children[0], gwps,
-                             skin_viewport, vp_refresh_mode);
+        if (viewport->children_count)
+            skin_render_viewport(viewport->children[0], gwps,
+                                 skin_viewport, vp_refresh_mode);
         refresh_mode = old_refresh_mode;
     }