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

[Haihao Xiang]

Module: Mesa
Branch: master
Commit: 8b69c42b356d51c3a37bc0af41738b016c2adc5b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8b69c42b356d51c3a37bc0af41738b016c2adc5b

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

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

---

 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 b96ba72..c677ddd 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,