From 2e0346040a493957005d4856cfb754d5dcf97700 Mon Sep 17 00:00:00 2001
From: deadwood <deadwood@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Date: Sun, 12 Jan 2014 11:32:04 +0000
Subject: [PATCH] dos.library: Support NIL: special case in UnLock()

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@48713 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
---
 rom/dos/unlock.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rom/dos/unlock.c b/rom/dos/unlock.c
index 5fb068d9c3..19357fa264 100644
--- a/rom/dos/unlock.c
+++ b/rom/dos/unlock.c
@@ -52,6 +52,14 @@
     struct FileLock *fl = BADDR(lock);
 
     ASSERT_VALID_PTR_OR_NULL(fl);
+
+    /* Special case for NIL: */
+    if (fl && fl->fl_Task == NULL)
+    {
+        FreeMem(fl, sizeof(struct FileLock));
+        return 0;
+    }
+
     ASSERT_VALID_FILELOCK(lock);
 
     D(bug("UnLock(%x)\n", fl));
-- 
2.11.4.GIT