Mesa (master): draw: init pre_clip_pos = NULL to fix optimized build warning

[Brian Paul]

Module: Mesa
Branch: master
Commit: 6a9d7659d68c8678f4e469b15c15ff0f10075746
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6a9d7659d68c8678f4e469b15c15ff0f10075746

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Mar 13 08:35:39 2013 -0600

draw: init pre_clip_pos = NULL to fix optimized build warning

---

 src/gallium/auxiliary/draw/draw_pt_so_emit.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_pt_so_emit.c b/src/gallium/auxiliary/draw/draw_pt_so_emit.c
index 64ed544..25584a9 100644
--- a/src/gallium/auxiliary/draw/draw_pt_so_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_so_emit.c
@@ -148,7 +148,7 @@ static void so_emit_prim(struct pt_so_emit *so,
 
    for (i = 0; i < num_vertices; ++i) {
       const float (*input)[4];
-      const float (*pre_clip_pos)[4];
+      const float (*pre_clip_pos)[4] = NULL;
       int ob;
 
       input = (const float (*)[4])(