Mesa (mesa_7_7_branch): svga: Fix debug build crash when rendering to depth /stencil renderbuffer only.

[Michel Dänzer]

Module: Mesa
Branch: mesa_7_7_branch
Commit: acd1451393068762a46a06aee3af9e94bc09e147
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=acd1451393068762a46a06aee3af9e94bc09e147

Author: Michel Dänzer <daenzer at vmware.com>
Date:   Mon Jan  4 13:05:43 2010 +0100

svga: Fix debug build crash when rendering to depth/stencil renderbuffer only.

---

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

diff --git a/src/gallium/drivers/svga/svga_draw.c b/src/gallium/drivers/svga/svga_draw.c
index 8db40d0..ca73cf9 100644
--- a/src/gallium/drivers/svga/svga_draw.c
+++ b/src/gallium/drivers/svga/svga_draw.c
@@ -164,7 +164,8 @@ svga_hwtnl_flush( struct svga_hwtnl *hwtnl )
       }
 
       SVGA_DBG(DEBUG_DMA, "draw to sid %p, %d prims\n",
-               svga_surface(svga->curr.framebuffer.cbufs[0])->handle,
+               svga->curr.framebuffer.cbufs[0] ?
+               svga_surface(svga->curr.framebuffer.cbufs[0])->handle : NULL,
                hwtnl->cmd.prim_count);
 
       ret = SVGA3D_BeginDrawPrimitives(swc,