From 33c3bdeb03129bab41722104c6a40cea6666dd6d Mon Sep 17 00:00:00 2001
From: James Hawkins <jhawkins@codeweavers.com>
Date: Fri, 2 May 2008 03:45:32 -0500
Subject: [PATCH] msi: A progid who is its own parent cannot have a clsid.

---
 dlls/msi/classes.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/msi/classes.c b/dlls/msi/classes.c
index aca7c93204f..45254ef999a 100644
--- a/dlls/msi/classes.c
+++ b/dlls/msi/classes.c
@@ -971,6 +971,8 @@ static LPCWSTR get_clsid_of_progid( const MSIPROGID *progid )
     {
         if (progid->Class)
             return progid->Class->clsid;
+        if (progid->Parent == progid)
+            break;
         progid = progid->Parent;
     }
     return NULL;