[gtk+] drawingarea: Fix code snippet

[Timm Bäder <baedert src gnome org>]

commit 114f232a9982e3a418f5922b593467132d488681
Author: Timm Bäder <mail baedert org>
Date:   Wed Oct 11 13:20:15 2017 +0200

    drawingarea: Fix code snippet
    
    Remove state parameter to gtk_style_context_get_color

 gtk/gtkdrawingarea.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkdrawingarea.c b/gtk/gtkdrawingarea.c
index c36c983..e3af7b5 100644
--- a/gtk/gtkdrawingarea.c
+++ b/gtk/gtkdrawingarea.c
@@ -100,19 +100,24 @@ static GParamSpec *props[LAST_PROP] = { NULL, };
  *              0, 2 * G_PI);
  *
  *   gtk_style_context_get_color (context,
- *                                gtk_style_context_get_state (context),
  *                                &color);
  *   gdk_cairo_set_source_rgba (cr, &color);
  *
  *   cairo_fill (cr);
  * }
- * [...]
+ *
+ * void main (int argc, char **argv)
+ * {
+ *   gtk_init ();
+ *
  *   GtkWidget *area = gtk_drawing_area_new ();
  *   gtk_drawing_area_set_content_width (GTK_DRAWING_AREA (area), 100);
  *   gtk_drawing_area_set_content_height (GTK_DRAWING_AREA (area), 100);
  *   gtk_drawing_area_set_draw_func (GTK_DRAWING_AREA (area),
  *                                   draw_function,
  *                                   NULL, NULL);
+ *
+ * }
  * ]|
  *
  * The draw function is normally called when a drawing area first comes