Mesa (master): ilo: clear writer pointer after unmapping

[Chia-I Wu]

Module: Mesa
Branch: master
Commit: 4e2cf84b1f5fd9f52dd1a12947a405a25d1e2137
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=4e2cf84b1f5fd9f52dd1a12947a405a25d1e2137

Author: Chia-I Wu <olvaffe at gmail.com>
Date:   Tue Oct 14 08:29:16 2014 +0800

ilo: clear writer pointer after unmapping

It does not look like an issue now but it is good to be future proof.  Spotted
by Courtney Goeltzenleuchter.

Signed-off-by: Chia-I Wu <olvaffe at gmail.com>

---

 src/gallium/drivers/ilo/ilo_builder_decode.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/drivers/ilo/ilo_builder_decode.c b/src/gallium/drivers/ilo/ilo_builder_decode.c
index 470c1ae..922acc0 100644
--- a/src/gallium/drivers/ilo/ilo_builder_decode.c
+++ b/src/gallium/drivers/ilo/ilo_builder_decode.c
@@ -529,6 +529,7 @@ ilo_builder_writer_decode_items(struct ilo_builder *builder,
    }
 
    intel_bo_unmap(writer->bo);
+   writer->ptr = NULL;
 }
 
 static void