[gnome-control-center] printers: Don't try to draw empty ink level

[Marek Kašík <mkasik src gnome org>]

commit 0f1caabc332fa35eea80a437b0c43da549330cc5
Author: Marek Kasik <mkasik redhat com>
Date:   Thu Feb 10 11:04:17 2011 +0100

    printers: Don't try to draw empty ink level

 panels/printers/cc-printers-panel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/printers/cc-printers-panel.c b/panels/printers/cc-printers-panel.c
index 13ba0d5..6fdec7a 100644
--- a/panels/printers/cc-printers-panel.c
+++ b/panels/printers/cc-printers-panel.c
@@ -1507,7 +1507,7 @@ supply_levels_draw_cb (GtkWidget *widget,
 
               gdk_rgba_parse (&color, ((MarkerItem*) tmp_list->data)->color);
 
-              if (value >= 0)
+              if (value > 0)
                 {
                   display_value = value / 100.0 * (width - 3.0);
                   gdk_cairo_set_source_rgba (cr, &color);