[gtk/wip/carlosg/input-fixes: 1/7] demos: Initialize brush size in "paint" demo

[Carlos Garnacho <carlosg src gnome org>]

commit ccfffb2578fb0747dd677184f2341bd3791919bf
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Apr 24 22:20:09 2020 +0200

    demos: Initialize brush size in "paint" demo
    
    Otherwise lines end up with 0 thickness.

 demos/gtk-demo/paint.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/demos/gtk-demo/paint.c b/demos/gtk-demo/paint.c
index 6312575a5f..cf5adc4743 100644
--- 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 *