Mesa (main): glthread: only log glthread destroy reason when it's not NULL

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Module: Mesa
Branch: main
Commit: 41cc6a4c7f785a76a6e846f995ffdfa99f1492b5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=41cc6a4c7f785a76a6e846f995ffdfa99f1492b5

Author: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
Date:   Thu Dec 16 12:09:16 2021 +0100

glthread: only log glthread destroy reason when it's not NULL

Fixes: 670759a208d ("glthread: inline _mesa_glthread_restore_dispatch and merge disable & destroy")
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14226>

---

 src/mesa/main/glthread.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/glthread.c b/src/mesa/main/glthread.c
index 731e6d1554d..8eb1b7df901 100644
--- a/src/mesa/main/glthread.c
+++ b/src/mesa/main/glthread.c
@@ -164,7 +164,8 @@ _mesa_glthread_destroy(struct gl_context *ctx, const char *reason)
    if (!glthread->enabled)
       return;
 
-   _mesa_debug(ctx, "glthread destroy reason: %s\n", reason);
+   if (reason)
+      _mesa_debug(ctx, "glthread destroy reason: %s\n", reason);
 
    _mesa_glthread_finish(ctx);
    util_queue_destroy(&glthread->queue);