Use pcsc_reader configuration in one for scard_init() call

This allows PC/SC reader to be identified with the pcsc_reader
configuration parameter.

Signed-off-by: Jouni Malinen <j@w1.fi>

wpa_supplicant/events.c

@@ -342,7 +342,7 @@ int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 	wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 		"(sim=%d aka=%d) - initialize PCSC", sim, aka);
 
-	wpa_s->scard = scard_init(NULL);
+	wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 	if (wpa_s->scard == NULL) {
 		wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 			"(pcsc-lite)");