amend integer argument type (GH#521)

diff --git a/print-802_11.c b/print-802_11.c
index 424c7cd70732209877e81c72fac58346d2c94d7e..aca6312b2712dd9de4fe303a9ac3a99f83613129 100644 (file)
--- a/print-802_11.c
+++ b/print-802_11.c
@@ -2518,7 +2518,7 @@ enum ieee80211_radiotap_type {
 
 static void
 print_chaninfo(netdissect_options *ndo,
-               int freq, int flags, int presentflags)
+               uint16_t freq, int flags, int presentflags)
 {
        ND_PRINT((ndo, "%u MHz", freq));
        if (presentflags & (1 << IEEE80211_RADIOTAP_MCS)) {