mac80211: fix RTS threshold not being set for mac80211 devices

A typo prevented it from working, tested with ar71xx and ath9k.

Signed-off-by: Otto Solares <solca@guug.org>

SVN-Revision: 18719

package/mac80211/files/lib/wifi/mac80211.sh

@@ -209,7 +209,7 @@ enable_mac80211() {
 
 		config_get rts "$vif" rts
 		if [ -n "$rts" ]; then
-			iw phy "$phy" set rts "${frag%%.*}"
+			iw phy "$phy" set rts "${rts%%.*}"
 		fi
 
 		ifconfig "$ifname" up