Fix -oneline output when alias present

This patch removes '\n' in -oneline output when alias
present on interface

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index cff503f..fdd2a74 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -468,9 +468,11 @@
 	if (do_link && tb[IFLA_LINKINFO] && show_details)
 		print_linktype(fp, tb[IFLA_LINKINFO]);
 
-	if (do_link && tb[IFLA_IFALIAS])
-		fprintf(fp,"\n    alias %s", 
+	if (do_link && tb[IFLA_IFALIAS]) {
+		fprintf(fp, "%s", _SL_);
+		fprintf(fp,"    alias %s",
 			rta_getattr_str(tb[IFLA_IFALIAS]));
+	}
 
 	if (do_link && show_stats) {
 		if (tb[IFLA_STATS64])