winscard: add pcsc-lite helpers for upcoming implementation

[James Hawkins]

On 5/23/07, Mounir IDRASSI <mounir.idrassi at idrix.fr> wrote:
> Hi,
> This patch adds helper variables and functions that exposes pcsc-lite
> functionalities for the use of the upcoming implementation.
>

+            /* loading entry points*/
+            bSuccess = TRUE;
+            if (bSuccess &&
+                !(liteSCardEstablishContext =
(SCardEstablishContextPtr)
wine_dlsym(g_pcscliteHandle,"SCardEstablishContext",szErr,sizeof(szErr))))
+            {
+                bSuccess = FALSE;
+                ERR("Failed to get SCardEstablishContext from
pcsclite library. Error = %s\n",szErr);
+            }

This would be a lot cleaner as:

if (!(liteSCardEstablishContext = (SCardEstablishContextPtr)
wine_dlsym(g_pcscliteHandle,"SCardEstablishContext",szErr,sizeof(szErr)))
{
    ERR("Failed to get SCardEstablishContext from pcsclite library.
Error = %s\n",szErr);
    goto error;
}

....

return TRUE;

error:
    wine_dlclose(g_pcscliteHandle,NULL,0);
    g_pcscliteHandle = NULL;
    return FALSE;
}

-- 
James Hawkins