From 35eaf46c6ae9770892e29e61a72c49c5a67871d1 Mon Sep 17 00:00:00 2001
From: Arcank <arcank@free.fr>
Date: Tue, 14 Jun 2011 19:23:52 -0700
Subject: [PATCH] Added an early return in -[NSManagedObjectModel+ActiveRecord
 setDefaultManagedObjectModel:]. If the passed model was the same as the
 current one, it could have been dealloced in between. (Ref count -1, +1 can
 pass by 0.)

---
 NSManagedObjectModel+ActiveRecord.m | 1 +
 1 file changed, 1 insertion(+)

diff --git a/NSManagedObjectModel+ActiveRecord.m b/NSManagedObjectModel+ActiveRecord.m
index 6fcf908..af0d36b 100644
--- a/NSManagedObjectModel+ActiveRecord.m
+++ b/NSManagedObjectModel+ActiveRecord.m
@@ -24,6 +24,7 @@ static NSManagedObjectModel *defaultManagedObjectModel = nil;
 
 + (void) setDefaultManagedObjectModel:(NSManagedObjectModel *)newDefaultModel
 {
+	if (defaultManagedObjectModel == newDefaultModel) return;
 	[defaultManagedObjectModel release];
 	defaultManagedObjectModel = [newDefaultModel retain];
 }