draw: Silence pointer-to-integer cast warning.

diff --git a/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h b/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h
index 55a8e65..010c7a1 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h
+++ b/src/gallium/auxiliary/draw/draw_pt_varray_tmp_linear.h
@@ -9,7 +9,7 @@ static void FUNC(struct draw_pt_front_end *frontend,
                  unsigned count)
 {
    struct varray_frontend *varray = (struct varray_frontend *)frontend;
-   unsigned start = (unsigned)elts;
+   unsigned start = (unsigned) ((char *) elts - (char *) NULL);
 
    unsigned j;
    unsigned first, incr;