ip{, 6}tunnel: unify behaviour if physical device is not found

Make ip6tunnel print an error message as well. While there, get rid of
unnecessary line breaking.
Signed-off-by: Phil Sutter <phil@nwl.cc>

ip/ip6tunnel.c

@@ -278,8 +278,10 @@ static int parse_args(int argc, char **argv, int cmd, struct ip6_tnl_parm2 *p)
 	}
 	if (medium[0]) {
 		p->link = ll_name_to_index(medium);
-		if (p->link == 0)
+		if (p->link == 0) {
+			fprintf(stderr, "Cannot find device \"%s\"\n", medium);
 			return -1;
+		}
 	}
 	return 0;
 }

ip/iptunnel.c

@@ -228,8 +228,7 @@ static int parse_args(int argc, char **argv, int cmd, struct ip_tunnel_parm *p)
 	if (medium[0]) {
 		p->link = if_nametoindex(medium);
 		if (p->link == 0) {
-			fprintf(stderr, "Cannot find device \"%s\"\n",
-				medium);
+			fprintf(stderr, "Cannot find device \"%s\"\n", medium);
 			return -1;
 		}
 	}