wined3d: Define the surface alignment in the header.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index c9fb365..208ffa4 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -996,6 +996,9 @@
 
 BOOL CalculateTexRect(IWineD3DSurfaceImpl *This, RECT *Rect, float glTexCoord[4]);
 
+/* Alignment of the pitch */
+#define SURFACE_ALIGNMENT 4
+
 /*****************************************************************************
  * IWineD3DVertexDeclaration implementation structure
  */