From 4215ce482091f70654b984579f05ace2d101ba5d Mon Sep 17 00:00:00 2001
From: Andriy Voskoboinyk <avos@FreeBSD.org>
Date: Sat, 2 Feb 2019 16:15:46 +0000
Subject: [PATCH] sys/dev/wtap: Check return value from malloc(..., M_NOWAIT)
 and drop unneeded cast.

MFC after:	3 days
---
 sys/dev/wtap/if_wtap.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/dev/wtap/if_wtap.c b/sys/dev/wtap/if_wtap.c
index 7316263143c8..fe0a610c6058 100644
--- a/sys/dev/wtap/if_wtap.c
+++ b/sys/dev/wtap/if_wtap.c
@@ -373,7 +373,7 @@ wtap_vap_delete(struct ieee80211vap *vap)
 	destroy_dev(avp->av_dev);
 	callout_stop(&avp->av_swba);
 	ieee80211_vap_detach(vap);
-	free((struct wtap_vap*) vap, M_80211_VAP);
+	free(avp, M_80211_VAP);
 }
 
 static void
@@ -602,6 +602,8 @@ wtap_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
 
 	ni = malloc(sizeof(struct ieee80211_node), M_80211_NODE,
 	    M_NOWAIT|M_ZERO);
+	if (ni == NULL)
+		return (NULL);
 
 	ni->ni_txrate = 130;
 	return ni;