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@gmail.com>

diff --git a/src/gallium/drivers/ilo/ilo_builder_decode.c b/src/gallium/drivers/ilo/ilo_builder_decode.c
index 470c1ae..922acc0 100644 (file)
--- 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