Mesa (master): i810: Add assert to check for null pointer dereference.

[Vinson Lee]

Module: Mesa
Branch: master
Commit: 975f105bb88fe6c146c091556f142e733885c91a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=975f105bb88fe6c146c091556f142e733885c91a

Author: Vinson Lee <vlee at vmware.com>
Date:   Sat Feb 27 16:41:49 2010 -0800

i810: Add assert to check for null pointer dereference.

---

 src/mesa/drivers/dri/i810/i810texmem.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i810/i810texmem.c b/src/mesa/drivers/dri/i810/i810texmem.c
index bb426a4..6e6b21c 100644
--- a/src/mesa/drivers/dri/i810/i810texmem.c
+++ b/src/mesa/drivers/dri/i810/i810texmem.c
@@ -155,6 +155,7 @@ int i810UploadTexImagesLocked( i810ContextPtr imesa, i810TextureObjectPtr t )
 	return -1;
       }
       
+      assert(t->base.memBlock);
       ofs = t->base.memBlock->ofs;
       t->BufAddr = imesa->i810Screen->tex.map + ofs;
       t->Setup[I810_TEXREG_MI3] = imesa->i810Screen->textureOffset + ofs;