[PATCH 1/1] crypt32: Duplicate provided root store in CRYPT_CreateChainEngine().

[Paul Gofman]

From: Paul Gofman

---
 dlls/crypt32/chain.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dlls/crypt32/chain.c b/dlls/crypt32/chain.c
index b99b5729332..1b38e789f15 100644
--- a/dlls/crypt32/chain.c
+++ b/dlls/crypt32/chain.c
@@ -117,17 +117,20 @@ HCERTCHAINENGINE CRYPT_CreateChainEngine(HCERTSTORE root, DWORD system_store, co
     CertificateChainEngine *engine;
     HCERTSTORE worldStores[4];

-    if(!root) {
+    if (root) {
+        root = CertDuplicateStore(root);
+    } else {
         if(config->cbSize >= sizeof(CERT_CHAIN_ENGINE_CONFIG) && config->hExclusiveRoot)
             root = CertDuplicateStore(config->hExclusiveRoot);
         else if (config->hRestrictedRoot)
             root = CertDuplicateStore(config->hRestrictedRoot);
         else
             root = CertOpenStore(CERT_STORE_PROV_SYSTEM_W, 0, 0, system_store, L"Root");
-        if(!root)
-            return NULL;
     }

+    if(!root)
+        return NULL;
+
     engine = CryptMemAlloc(sizeof(CertificateChainEngine));
     if(!engine) {
         CertCloseStore(root, 0);