wined3d: Work around an ARBFP vs GLSL bug in Mac OS.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index f136dd8..1698504 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1234,6 +1234,7 @@
     GLint                   gl_fog_source;
     GLfloat                 fog_coord_value;
     GLfloat                 color[4], fogstart, fogend, fogcolor[4];
+    GLuint                  dummy_arbfp_prog;
 };
 
 typedef enum ContextUsage {