Mesa (mesa_7_2_branch): intel: check for null texture. (fix #13902)

[Haihao Xiang]

Module: Mesa
Branch: mesa_7_2_branch
Commit: 251bc8383d0ec01aaafb0e4eea9105ef1756891c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=251bc8383d0ec01aaafb0e4eea9105ef1756891c

Author: Xiang, Haihao <haihao.xiang at intel.com>
Date:   Fri Dec 12 10:02:05 2008 +0800

intel: check for null texture. (fix #13902)
(cherry picked from commit 8b69c42b356d51c3a37bc0af41738b016c2adc5b)

---

 src/mesa/drivers/dri/intel/intel_mipmap_tree.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 9be7e02..d8202aa 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -111,9 +111,9 @@ intel_miptree_create(struct intel_context *intel,
 				      first_level, last_level, width0,
 				      height0, depth0, cpp, compress_byte);
    /*
-    * pitch == 0 indicates the null texture
+    * pitch == 0 || height == 0  indicates the null texture
     */
-   if (!mt || !mt->pitch)
+   if (!mt || !mt->pitch || !mt->total_height)
       return NULL;
 
    mt->region = intel_region_alloc(intel,