Mesa (master): postprocess: Check ppq is null before calling pp_free_bos.

[Vinson Lee]

Module: Mesa
Branch: master
Commit: 8294d969e1c2154721eb34dff5848b64f4604308
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8294d969e1c2154721eb34dff5848b64f4604308

Author: Vinson Lee <vlee at freedesktop.org>
Date:   Fri Aug  2 23:39:24 2013 -0700

postprocess: Check ppq is null before calling pp_free_bos.

pp_free_bos dereferences ppq without a null check.

Fixes "Dereference before null check" defect reported by Coverity.

Signed-off-by: Vinson Lee <vlee at freedesktop.org>
Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/gallium/auxiliary/postprocess/pp_init.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/postprocess/pp_init.c b/src/gallium/auxiliary/postprocess/pp_init.c
index 201a357..a49a23d 100644
--- a/src/gallium/auxiliary/postprocess/pp_init.c
+++ b/src/gallium/auxiliary/postprocess/pp_init.c
@@ -169,7 +169,9 @@ pp_free(struct pp_queue_t *ppq)
 {
    unsigned int i, j;
 
-   pp_free_fbos(ppq);
+   if (ppq) {
+      pp_free_fbos(ppq);
+   }
 
    if (ppq && ppq->p) {
       if (ppq->p->pipe && ppq->filters && ppq->shaders) {