commit 846a9938dcb6d52c94e5fa84b00eba3c66c5cc93
Author: Pierre Willenbrock <pierre@pirsoft.de>
Date:   Fri Dec 12 21:18:23 2008 +0100

    Don't steal renderbuffer from caller in intel_miptree_create_for_region

diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index c677ddd..bf1c3f0 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -163,7 +163,7 @@ intel_miptree_create_for_region(struct intel_context *intel,
    mt->pitch = region->pitch;
 #endif
 
-   mt->region = region;
+   intel_region_reference(&mt->region, region);
 
    return mt;
  }