Mesa (master): nvc0: fix crash when nv50_miptree_from_handle fails

[Samuel Pitoiset]

Module: Mesa
Branch: master
Commit: 3bbb8715acd1cb85ea7aa7763c06cd12347a1a9a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3bbb8715acd1cb85ea7aa7763c06cd12347a1a9a

Author: Julien Isorce <j.isorce at samsung.com>
Date:   Tue Oct 20 17:34:23 2015 +0100

nvc0: fix crash when nv50_miptree_from_handle fails

Signed-off-by: Julien Isorce <j.isorce at samsung.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>

---

 src/gallium/drivers/nouveau/nvc0/nvc0_resource.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_resource.c b/src/gallium/drivers/nouveau/nvc0/nvc0_resource.c
index 12b5a02..15c803c 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_resource.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_resource.c
@@ -26,7 +26,8 @@ nvc0_resource_from_handle(struct pipe_screen * screen,
    } else {
       struct pipe_resource *res = nv50_miptree_from_handle(screen,
                                                            templ, whandle);
-      nv04_resource(res)->vtbl = &nvc0_miptree_vtbl;
+      if (res)
+         nv04_resource(res)->vtbl = &nvc0_miptree_vtbl;
       return res;
    }
 }