Mesa (master): glsl: Protect against double compiler-destroy.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: d539c69044c735618bf85485df7733e9f0491d18
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d539c69044c735618bf85485df7733e9f0491d18

Author: Eric Anholt <eric at anholt.net>
Date:   Fri Aug 27 15:23:29 2010 -0700

glsl: Protect against double compiler-destroy.

DRI was doing teardown when we close the last screen, then an atexit()
was added to call it as well.

---

 src/glsl/builtins/tools/generate_builtins.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/glsl/builtins/tools/generate_builtins.py b/src/glsl/builtins/tools/generate_builtins.py
index b9f0ba1..ab5b377 100755
--- a/src/glsl/builtins/tools/generate_builtins.py
+++ b/src/glsl/builtins/tools/generate_builtins.py
@@ -175,6 +175,7 @@ void
 _mesa_glsl_release_functions(void)
 {
     talloc_free(builtin_mem_ctx);
+    builtin_mem_ctx = NULL;
 }
 
 void