[gbrainy] Set default font size. Fixes PDF export issues

[Jordi Mas <jmas src gnome org>]

commit 1ebd16db12c1c49a1d623a8bddb809ac60da157c
Author: Jordi Mas <jmas softcatala org>
Date:   Mon Nov 22 22:48:10 2010 +0100

    Set default font size. Fixes PDF export issues

 src/Core/Main/Game.cs |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/Core/Main/Game.cs b/src/Core/Main/Game.cs
index 6270c6d..d8ae719 100644
--- a/src/Core/Main/Game.cs
+++ b/src/Core/Main/Game.cs
@@ -345,6 +345,8 @@ namespace gbrainy.Core.Main
 			gr.DrawBackground ();
 			gr.Color = default_color;
 			gr.LineWidth = LineWidth;
+			// Not all Cairo surfaces have a default font size (like PDF)
+			gr.SetPangoNormalFontSize ();
 		}
 
 		public virtual void Draw (CairoContextEx gr, int width, int height, bool rtl)