staging: rtl8188eu: Do not byteswap half initialized variable

Copying 16 bits into an uninitialized 32 bit stack variable and then
byteswapping it can provide 'interesting' results.

Signed-off-by: Jes Sorensen <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8188eu/core/rtw_mlme_ext.c

···
 	struct registry_priv	*pregistrypriv = &padapter->registrypriv;
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &(pmlmeext->mlmext_info);
-	__le32 le32_tmp;
 
 	len = packet_len - sizeof(struct rtw_ieee80211_hdr_3addr);
 
···
 		return _SUCCESS;
 	}
 
-	memcpy(&le32_tmp, rtw_get_beacon_interval_from_ie(bssid->IEs), 2);
-	bssid->Configuration.BeaconPeriod = le32_to_cpu(le32_tmp);
+	bssid->Configuration.BeaconPeriod =
+		get_unaligned_le16(rtw_get_beacon_interval_from_ie(bssid->IEs));
 
 	val16 = rtw_get_capability((struct wlan_bssid_ex *)bssid);