lib/tun.c: tun_ipv6_linklocal_get(): fix memory leak with getifaddrs()

From getifaddrs(3) man:
"The data returned by getifaddrs() is dynamically allocated and should
be freed using freeifaddrs() when no longer needed"

Change-Id: If6300d1c8d36fcafef294a4c11bbda31a158bb9c

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/tun.c b/lib/tun.c
index 32a8d2d..35d371e 100644
--- a/lib/tun.c
+++ b/lib/tun.c
@@ -776,7 +776,9 @@ int tun_ipv6_linklocal_get(const struct tun_t *tun, struct in6_addr *ia)
 			continue;
 
 		*ia = sin6->sin6_addr;
+		freeifaddrs(ifaddr);
 		return 0;
 	}
+	freeifaddrs(ifaddr);
 	return -1;
 }