From 8d2df83b4378f1dcbbf923b5a78348a88b60fa74 Mon Sep 17 00:00:00 2001
From: Andre Nathan <andre@digirati.com.br>
Date: Thu, 5 Dec 2013 10:46:38 -0200
Subject: [PATCH] Return nil if container has no init

---
 ext/lxc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ext/lxc.c b/ext/lxc.c
index 3fc553b..ff058ba 100644
--- a/ext/lxc.c
+++ b/ext/lxc.c
@@ -126,7 +126,8 @@ container_init_pid(VALUE self)
 
     Data_Get_Struct(self, struct container_data, data);
     pid = data->container->init_pid(data->container);
-
+    if (pid < 0)
+        return Qnil;
     return INT2NUM(pid);
 }