From 291c14a9b41b596e8e4c6a65be3951117d29bcae Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Thu, 5 Apr 2007 14:38:25 +0000
Subject: [PATCH] oops, another threading fix

---
 dtool/src/dtoolbase/deletedChain.T | 2 +-
 dtool/src/dtoolbase/deletedChain.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dtool/src/dtoolbase/deletedChain.T b/dtool/src/dtoolbase/deletedChain.T
index b1b63d584f..60e2e6bf3e 100644
--- a/dtool/src/dtoolbase/deletedChain.T
+++ b/dtool/src/dtoolbase/deletedChain.T
@@ -258,7 +258,7 @@ init_lock() {
 ////////////////////////////////////////////////////////////////////
 template<class Type>
 void DeletedChain<Type>::
-do_init_lock(MutexImpl *lock) {
+do_init_lock(MutexImpl *&lock) {
   MutexImpl *new_lock = new MutexImpl;
 
   // Even though DELETED_CHAIN_USE_ATOMIC_EXCHANGE is not true, we
diff --git a/dtool/src/dtoolbase/deletedChain.h b/dtool/src/dtoolbase/deletedChain.h
index 87a801b83c..ee3e99af97 100644
--- a/dtool/src/dtoolbase/deletedChain.h
+++ b/dtool/src/dtoolbase/deletedChain.h
@@ -119,7 +119,7 @@ private:
   // If we don't have atomic compare-and-exchange, we need to use a
   // Mutex to protect the above linked list.
   static INLINE void init_lock();
-  static void do_init_lock(MutexImpl *lock);
+  static void do_init_lock(MutexImpl *&lock);
   static MutexImpl *_lock;
 #endif
 };