Mesa (master): i965: Fix batch map failure check in INTEL_DEBUG= bat handling.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: b339d63f0d0337df918c7aed471b90c02401bdb7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b339d63f0d0337df918c7aed471b90c02401bdb7

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Sep 18 18:50:06 2017 -0700

i965: Fix batch map failure check in INTEL_DEBUG=bat handling.

I originally wrote the code to call the maps 'batch' and 'state',
until I remembered that 'batch' is the intel_batchbuffer struct pointer.
The NULL check was still using the wrong variable.

Caught by Coverity.

CID: 1418109

---

 src/mesa/drivers/dri/i965/intel_batchbuffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.c b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
index 7d5a8947e8..6a16771fc6 100644
--- a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
+++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
@@ -439,7 +439,7 @@ do_batch_dump(struct brw_context *brw)
 
    uint32_t *batch_data = brw_bo_map(brw, batch->bo, MAP_READ);
    uint32_t *state = brw_bo_map(brw, batch->state_bo, MAP_READ);
-   if (batch == NULL || state == NULL) {
+   if (batch_data == NULL || state == NULL) {
       fprintf(stderr, "WARNING: failed to map batchbuffer/statebuffer\n");
       return;
    }