shell: Fix tst_get_unused_port endianity
am: 215478cfb2

Change-Id: I129c32abbee4b07c792640d5ce50971f9750ec02
diff --git a/testcases/lib/tst_get_unused_port.c b/testcases/lib/tst_get_unused_port.c
index 0173f16..a843cc6 100644
--- a/testcases/lib/tst_get_unused_port.c
+++ b/testcases/lib/tst_get_unused_port.c
@@ -54,6 +54,6 @@
 		return 1;
 	}
 
-	printf("%d", TST_GET_UNUSED_PORT(family, type));
+	printf("%d", ntohs(TST_GET_UNUSED_PORT(family, type)));
 	return 0;
 }