Zebediah Figura : cryptnet: Use RTL_SIZEOF_THROUGH_FIELD.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d12ca0dd84cfaef9d58a94c7d0c9a1109048a65a
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d12ca0dd84cfaef9d58a94c7d0c9a1109048a65a

Author: Zebediah Figura <zfigura at codeweavers.com>
Date:   Thu Jul 15 11:25:18 2021 -0500

cryptnet: Use RTL_SIZEOF_THROUGH_FIELD.

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/cryptnet/cryptnet_main.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/dlls/cryptnet/cryptnet_main.c b/dlls/cryptnet/cryptnet_main.c
index efcb3dc9ba2..f667c655e46 100644
--- a/dlls/cryptnet/cryptnet_main.c
+++ b/dlls/cryptnet/cryptnet_main.c
@@ -521,13 +521,13 @@ static BOOL CRYPT_GetObjectFromCache(LPCWSTR pszURL, PCRYPT_BLOB_ARRAY pObject,
             {
                 if ((ret = CRYPT_GetObjectFromFile(hFile, pObject)))
                 {
-                    if (pAuxInfo && pAuxInfo->cbSize >=
-                     offsetof(CRYPT_RETRIEVE_AUX_INFO,
-                     pLastSyncTime) + sizeof(PFILETIME) &&
-                     pAuxInfo->pLastSyncTime)
+                    if (pAuxInfo && pAuxInfo->cbSize >= RTL_SIZEOF_THROUGH_FIELD(CRYPT_RETRIEVE_AUX_INFO, pLastSyncTime)
+                            && pAuxInfo->pLastSyncTime)
+                    {
                         memcpy(pAuxInfo->pLastSyncTime,
                          &pCacheInfo->LastSyncTime,
                          sizeof(FILETIME));
+                    }
                 }
                 CloseHandle(hFile);
             }
@@ -1028,12 +1028,12 @@ static BOOL WINAPI File_RetrieveEncodedObjectW(LPCWSTR pszURL,
             {
                 if ((ret = CRYPT_GetObjectFromFile(hFile, pObject)))
                 {
-                    if (pAuxInfo && pAuxInfo->cbSize >=
-                     offsetof(CRYPT_RETRIEVE_AUX_INFO,
-                     pLastSyncTime) + sizeof(PFILETIME) &&
-                     pAuxInfo->pLastSyncTime)
+                    if (pAuxInfo && pAuxInfo->cbSize >= RTL_SIZEOF_THROUGH_FIELD(CRYPT_RETRIEVE_AUX_INFO, pLastSyncTime)
+                            && pAuxInfo->pLastSyncTime)
+                    {
                         GetFileTime(hFile, NULL, NULL,
                          pAuxInfo->pLastSyncTime);
+                    }
                 }
                 CloseHandle(hFile);
             }
@@ -1557,9 +1557,8 @@ static DWORD verify_cert_revocation_from_dist_points_ext(
              &cbUrlArray, NULL, NULL);
             if (dwFlags & CERT_VERIFY_CACHE_ONLY_BASED_REVOCATION)
                 retrievalFlags |= CRYPT_CACHE_ONLY_RETRIEVAL;
-            if (dwFlags & CERT_VERIFY_REV_ACCUMULATIVE_TIMEOUT_FLAG &&
-             pRevPara && pRevPara->cbSize >= offsetof(CERT_REVOCATION_PARA,
-             dwUrlRetrievalTimeout) + sizeof(DWORD))
+            if ((dwFlags & CERT_VERIFY_REV_ACCUMULATIVE_TIMEOUT_FLAG) && pRevPara
+                    && pRevPara->cbSize >= RTL_SIZEOF_THROUGH_FIELD(CERT_REVOCATION_PARA, dwUrlRetrievalTimeout))
             {
                 startTime = GetTickCount();
                 endTime = startTime + pRevPara->dwUrlRetrievalTimeout;