intel: added null ptr check

Fixes segfault in context tear-down when glClear was never called.

diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 07d53aad23f59ad20ca356e8a61b92da7f760195..5dc3df395d18f4a887b29dca32dce0b2789e1580 100644 (file)
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -756,7 +756,8 @@ intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 
       INTEL_FIREVERTICES(intel);
 
-      _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
+      if (intel->clear.arrayObj)
+         _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 
       intel->vtbl.destroy(intel);