[gtk+/wip/gdk-gl2] Correct another Since tag

[Matthias Clasen <matthiasc src gnome org>]

commit d0fe5ce023adb56a0827180a856ba4ac97a85c6a
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Oct 11 23:20:53 2014 -0400

    Correct another Since tag

 gdk/wayland/gdkwaylandglcontext.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/wayland/gdkwaylandglcontext.h b/gdk/wayland/gdkwaylandglcontext.h
index 27b7e8f..d57d76b 100644
--- a/gdk/wayland/gdkwaylandglcontext.h
+++ b/gdk/wayland/gdkwaylandglcontext.h
@@ -37,7 +37,7 @@ G_BEGIN_DECLS
 typedef struct _GdkWaylandGLContext            GdkWaylandGLContext;
 typedef struct _GdkWaylandGLContextClass       GdkWaylandGLContextClass;
 
-GDK_AVAILABLE_IN_3_14
+GDK_AVAILABLE_IN_3_16
 GType gdk_wayland_gl_context_get_type (void) G_GNUC_CONST;
 
 G_END_DECLS