staging: rtl8723bs: core: fix line over 80 characters warning

Shorten the expression by re-using the part that was already computed to
fix the line over 80 characters warning reported by checkpatch.pl.
Signed-off-by: Anirudh Rayabharam <anirudh.rayabharam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_ap.c

@@ -2336,8 +2336,8 @@ void rtw_ap_restore_network(struct adapter *padapter)
 			Update_RA_Entry(padapter, psta);
 			/* pairwise key */
 			/* per sta pairwise key and settings */
-			if ((padapter->securitypriv.dot11PrivacyAlgrthm == _TKIP_) ||
-				(padapter->securitypriv.dot11PrivacyAlgrthm == _AES_)) {
+			if ((psecuritypriv->dot11PrivacyAlgrthm == _TKIP_) ||
+				(psecuritypriv->dot11PrivacyAlgrthm == _AES_)) {
 				rtw_setstakey_cmd(padapter, psta, true, false);
 			}
 		}