kernel32: Don't use the reserved argument of the APC routine callback.

dlls/kernel32/file.c

@@ -345,11 +345,11 @@ static void FILE_InitProcessDosHandles( void )
 /******************************************************************
  *		FILE_ReadWriteApc (internal)
  */
-static void WINAPI FILE_ReadWriteApc(void* apc_user, PIO_STATUS_BLOCK io_status, ULONG len)
+static void WINAPI FILE_ReadWriteApc(void* apc_user, PIO_STATUS_BLOCK io_status, ULONG reserved)
 {
     LPOVERLAPPED_COMPLETION_ROUTINE  cr = (LPOVERLAPPED_COMPLETION_ROUTINE)apc_user;
 
-    cr(RtlNtStatusToDosError(io_status->u.Status), len, (LPOVERLAPPED)io_status);
+    cr(RtlNtStatusToDosError(io_status->u.Status), io_status->Information, (LPOVERLAPPED)io_status);
 }