lxccontainer: remove PID file after lxc_start return

Make the way symmetric. This also fix the file leak in
daemon model.

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

src/lxc/lxccontainer.c

@@ -233,11 +233,6 @@ static void lxc_container_free(struct lxc_container *c)
 		free(c->config_path);
 		c->config_path = NULL;
 	}
-	if (c->pidfile) {
-		unlink(c->pidfile);
-		free(c->pidfile);
-		c->pidfile = NULL;
-	}
 
 	free(c);
 }
@@ -665,6 +660,12 @@ static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv
 		goto reboot;
 	}
 
+	if (c->pidfile) {
+		unlink(c->pidfile);
+		free(c->pidfile);
+		c->pidfile = NULL;
+	}
+
 	if (daemonize)
 		exit (ret == 0 ? true : false);
 	else