demos: Initialize brush size in "paint" demo

Otherwise lines end up with 0 thickness.

diff --git a/demos/gtk-demo/paint.c b/demos/gtk-demo/paint.c
index 6312575a5fa263bc2cdbb623e8a54103157fe9f9..cf5adc4743a003cfb1fcf02de9349603275b23de 100644 (file)
--- a/demos/gtk-demo/paint.c
+++ b/demos/gtk-demo/paint.c
@@ -339,6 +339,7 @@ drawing_area_init (DrawingArea *area)
   gtk_widget_add_controller (GTK_WIDGET (area), GTK_EVENT_CONTROLLER (gesture));
 
   area->draw_color = (GdkRGBA) { 0, 0, 0, 1 };
+  area->brush_size = 1;
 }
 
 static GtkWidget *