staging: rtl8712: fix signedness of length to rtl8717_set_ie

rtl8717_set_it() takes an unsigned int pointer as length,
fixed signedness in code using it.

Sparse warnings:

drivers/staging/rtl8712/ieee80211.c:191:53: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:191:53: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:191:53: got int *<noident>
drivers/staging/rtl8712/ieee80211.c:197:57: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:197:57: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:197:57: got int *<noident>
drivers/staging/rtl8712/ieee80211.c:199:63: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:199:63: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:199:63: got int *<noident>
drivers/staging/rtl8712/ieee80211.c:202:67: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:202:67: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:202:67: got int *<noident>
drivers/staging/rtl8712/ieee80211.c:206:73: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:206:73: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:206:73: got int *<noident>
drivers/staging/rtl8712/ieee80211.c:209:75: warning: incorrect type in argument 5 (different signedness)
drivers/staging/rtl8712/ieee80211.c:209:75: expected unsigned int [usertype] *frlen
drivers/staging/rtl8712/ieee80211.c:209:75: got int *<noident>

Signed-off-by: Stefano Manni <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8712/ieee80211.c

···
 
 int r8712_generate_ie(struct registry_priv *pregistrypriv)
 {
-	int sz = 0, rate_len;
+	int rate_len;
+	uint sz = 0;
 	struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
 	u8 *ie = pdev_network->IEs;
 	u16 beaconPeriod = (u16)pdev_network->Configuration.BeaconPeriod;