[PATCH v3 2/5] advapi32: Let CRYPTPROV.refcount be LONG and atomic.

[Serge Gautherie]

Signed-off-by: Serge Gautherie 
---
 dlls/advapi32/crypt.c | 5 ++---
 dlls/advapi32/crypt.h | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/dlls/advapi32/crypt.c b/dlls/advapi32/crypt.c
index 14acceb..f49a497 100644
--- a/dlls/advapi32/crypt.c
+++ b/dlls/advapi32/crypt.c
@@ -636,7 +636,7 @@ BOOL WINAPI CryptContextAddRef (HCRYPTPROV hProv, DWORD *pdwReserved, DWORD dwFl
    	return FALSE;
    }

-	pProv->refcount++;
+	InterlockedIncrement(&pProv->refcount);
    return TRUE;
 }

@@ -672,8 +672,7 @@ BOOL WINAPI CryptReleaseContext (HCRYPTPROV hProv, DWORD dwFlags)
    	return FALSE;
    }

-	pProv->refcount--;
-	if (pProv->refcount <= 0) 
+	if (InterlockedDecrement(&pProv->refcount) == 0)
    {
    	ret = pProv->pFuncs->pCPReleaseContext(pProv->hPrivate, dwFlags);
    	pProv->dwMagic = 0;
diff --git a/dlls/advapi32/crypt.h b/dlls/advapi32/crypt.h
index afee3e2..a442964 100644
--- a/dlls/advapi32/crypt.h
+++ b/dlls/advapi32/crypt.h
@@ -63,7 +63,7 @@ typedef struct tagPROVFUNCS
 typedef struct tagCRYPTPROV
 {
    DWORD dwMagic;
-	UINT refcount;
+	LONG refcount;
    HMODULE hModule;
    PPROVFUNCS pFuncs;
         HCRYPTPROV hPrivate;  /*CSP's handle - Should not be given to application under any circumstances!*/