winnt.h: Implement RtlSecureZeroMemory.

include/winbase.h

@@ -2778,6 +2778,7 @@ WINBASEAPI UINT        WINAPI _lwrite(HFILE,LPCSTR,UINT);
 #define     MoveMemory RtlMoveMemory
 #define     ZeroMemory RtlZeroMemory
 #define     CopyMemory RtlCopyMemory
+#define     SecureZeroMemory RtlSecureZeroMemory
 
 /* Wine internal functions */
 

include/winnt.h

@@ -5436,6 +5436,14 @@ typedef enum _CM_ERROR_CONTROL_TYPE
 #define RtlFillMemory(Destination, Length, Fill) memset((Destination),(Fill),(Length))
 #define RtlZeroMemory(Destination, Length) memset((Destination),0,(Length))
 
+static FORCEINLINE void *RtlSecureZeroMemory(void *buffer, SIZE_T length)
+{
+    volatile char *ptr = buffer;
+
+    while (length--) *ptr++ = 0;
+    return buffer;
+}
+
 #include <guiddef.h>
 
 typedef struct _OBJECT_TYPE_LIST {