[gnome-chess/gnome-3-8] Build with Vala 0.22

[Michael Catanzaro <mcatanzaro src gnome org>]

commit eeb2597da7279aca94cedfc05d32e7e17a6f4ba0
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Jan 20 12:56:25 2014 -0600

    Build with Vala 0.22

 src/chess-view-2d.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/chess-view-2d.vala b/src/chess-view-2d.vala
index 14330a6..080a4bb 100644
--- a/src/chess-view-2d.vala
+++ b/src/chess-view-2d.vala
@@ -133,8 +133,12 @@ private class ChessView2D : ChessView
             string[] files;
             string[] ranks;
 
+#if VALA_0_22
+            Cairo.Matrix matrix = c.get_matrix ();
+#else
             Cairo.Matrix matrix;
             c.get_matrix (out matrix);
+#endif
 
             if (scene.board_angle == 180.0)
             {