Juan Lang : crypt32: Don't dereference an output pointer which may be NULL.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0444cd93c42a61c66074007720e6280b0221c229
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0444cd93c42a61c66074007720...

Author: Juan Lang <juan.lang(a)gmail.com>
Date:   Thu Dec 10 08:58:20 2009 -0800

crypt32: Don't dereference an output pointer which may be NULL.

---

 dlls/crypt32/store.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/dlls/crypt32/store.c b/dlls/crypt32/store.c
index 3a786b0..9d670f9 100644
--- a/dlls/crypt32/store.c
+++ b/dlls/crypt32/store.c
@@ -899,7 +899,8 @@ BOOL WINAPI CertAddCertificateContextToStore(HCERTSTORE hCertStore,
         if (existing)
         {
             CertContext_CopyProperties(existing, pCertContext);
-            *ppStoreContext = CertDuplicateCertificateContext(existing);
+            if (ppStoreContext)
+                *ppStoreContext = CertDuplicateCertificateContext(existing);
         }
         else
             toAdd = CertDuplicateCertificateContext(pCertContext);