fix copy-pasto in netstat

[Stefan Sperling]

Index: net80211.c
===================================================================
RCS file: /cvs/src/usr.bin/netstat/net80211.c,v
retrieving revision 1.15
diff -u -p -r1.15 net80211.c
--- net80211.c  28 Apr 2016 14:46:50 -0000      1.15
+++ net80211.c  29 Apr 2016 16:57:45 -0000
@@ -117,7 +117,7 @@ net80211_ifstats(char *ifname)
        p(is_pbac_errs, "\t%lu pbac error%s\n");
        p(is_ht_nego_no_mandatory_mcs, "\t%lu HT negotiation failure%s because "
            "peer does not support MCS 0-7\n");
-       p(is_ht_nego_no_mandatory_mcs, "\t%lu HT negotiation failure%s because "
+       p(is_ht_nego_no_basic_mcs, "\t%lu HT negotiation failure%s because "
            "we do not support basic MCS set\n");
        p(is_ht_nego_bad_crypto,
            "\t%lu HT negotiation failure%s because peer uses bad crypto\n");