Mesa (master): softpipe: added null ptr check for align_free() call in vbuf code

[Brian Paul]

Module: Mesa
Branch: master
Commit: 6db24f449de9cc81e1f7bb2dde55a9819463d5e5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6db24f449de9cc81e1f7bb2dde55a9819463d5e5

Author: Brian Paul <brianp at vmware.com>
Date:   Thu Mar  5 09:49:00 2009 -0700

softpipe: added null ptr check for align_free() call in vbuf code

Fixes GALLIUM_NOCELL path.  See bug 20475.

---

 src/gallium/drivers/softpipe/sp_prim_vbuf.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
index eef6e58..e2b6a04 100644
--- a/src/gallium/drivers/softpipe/sp_prim_vbuf.c
+++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c
@@ -90,7 +90,8 @@ sp_vbuf_allocate_vertices(struct vbuf_render *vbr,
    unsigned size = vertex_size * nr_vertices;
 
    if (cvbr->vertex_buffer_size < size) {
-      align_free(cvbr->vertex_buffer);
+      if (cvbr->vertex_buffer)
+         align_free(cvbr->vertex_buffer);
       cvbr->vertex_buffer = align_malloc(size, 16);
       cvbr->vertex_buffer_size = size;
    }