avoid potential array index by -1

Noticed by: Coverity Prevent analysis tool
2005-03-16 20:40:48 +00:00 · 2005-03-16 20:40:48 +00:00 · 9b7f94f833
commit 9b7f94f833
parent 0ea8247d55
1 changed files with 2 additions and 1 deletions
--- a/sys/net80211/ieee80211_node.c
+++ b/sys/net80211/ieee80211_node.c
@ -628,7 +628,8 @@ ieee80211_end_scan(struct ieee80211com *ic)
 					bestchan = i;
 					break;
 				}
-				if (maxrssi[i] < maxrssi[bestchan])
+				if (bestchan == -1 ||
+				    maxrssi[i] < maxrssi[bestchan])
 					bestchan = i;
 			}
 		if (bestchan != -1) {