Jacek Caban : urlmon: Fixed potential null dereference.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ec34ad38ef0b6ca7b02454e5af66d91cc9b27ff7
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=ec34ad38ef0b6ca7b02454e5af66d91cc9b27ff7

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Sun Sep 28 17:44:56 2008 +0200

urlmon: Fixed potential null dereference.

---

 dlls/urlmon/bindctx.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/dlls/urlmon/bindctx.c b/dlls/urlmon/bindctx.c
index 328254c..044b817 100644
--- a/dlls/urlmon/bindctx.c
+++ b/dlls/urlmon/bindctx.c
@@ -511,7 +511,8 @@ HRESULT WINAPI RegisterBindStatusCallback(IBindCtx *pbc, IBindStatusCallback *pb
     hres = IBindCtx_RegisterObjectParam(pbc, BSCBHolder, (IUnknown*)bsc);
     IBindStatusCallback_Release(bsc);
     if(FAILED(hres)) {
-        IBindStatusCallback_Release(prev);
+        if(prev)
+            IBindStatusCallback_Release(prev);
         return hres;
     }