[PATCH] crypt32: pwszContainerName or pwszProvName could be NULL in CRYPT_KEY_PROV_INFO.

[Dmitry Timoshkov]

This patch makes behaviour of CRYPT_FixKeyProvInfoPointers match CRYPT_CopyKeyProvInfo,
and fixes reading CRYPT_KEY_PROV_INFO certificate property from the store.

Signed-off-by: Dmitry Timoshkov 
---
 dlls/crypt32/cert.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/dlls/crypt32/cert.c b/dlls/crypt32/cert.c
index 48eaac082e..488b84001c 100644
--- a/dlls/crypt32/cert.c
+++ b/dlls/crypt32/cert.c
@@ -525,13 +525,19 @@ void CRYPT_FixKeyProvInfoPointers(PCRYPT_KEY_PROV_INFO info)
     DWORD i, containerLen, provNameLen;
     LPBYTE data = (LPBYTE)info + sizeof(CRYPT_KEY_PROV_INFO);

-    info->pwszContainerName = (LPWSTR)data;
-    containerLen = (lstrlenW(info->pwszContainerName) + 1) * sizeof(WCHAR);
-    data += containerLen;
+    if (info->pwszContainerName)
+    {
+        info->pwszContainerName = (LPWSTR)data;
+        containerLen = (lstrlenW(info->pwszContainerName) + 1) * sizeof(WCHAR);
+        data += containerLen;
+    }

-    info->pwszProvName = (LPWSTR)data;
-    provNameLen = (lstrlenW(info->pwszProvName) + 1) * sizeof(WCHAR);
-    data += provNameLen;
+    if (info->pwszProvName)
+    {
+        info->pwszProvName = (LPWSTR)data;
+        provNameLen = (lstrlenW(info->pwszProvName) + 1) * sizeof(WCHAR);
+        data += provNameLen;
+    }

if (info->cProvParam)
     {