From 4eb92d41775e633fbc177b1dd163a799260835a8 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Wed, 1 Feb 2012 16:46:11 -0800
Subject: [PATCH] rt: Don't access fields on null supervisor task

---
 src/rt/rust_task.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/rt/rust_task.cpp b/src/rt/rust_task.cpp
index 1bf62e42f01..86dfb3b666f 100644
--- a/src/rt/rust_task.cpp
+++ b/src/rt/rust_task.cpp
@@ -482,11 +482,11 @@ rust_task::fail_parent() {
 void
 rust_task::unsupervise()
 {
-    DLOG(sched, task,
+    if (supervisor) {
+        DLOG(sched, task,
              "task %s @0x%" PRIxPTR
              " disconnecting from supervisor %s @0x%" PRIxPTR,
              name, this, supervisor->name, supervisor);
-    if (supervisor) {
         supervisor->deref();
     }
     supervisor = NULL;