From 3682e253a7ba3fbadd9e5c5228f9f3c866a1ce3c Mon Sep 17 00:00:00 2001
From: Oleg Kalachev <okalachev@gmail.com>
Date: Wed, 10 Jun 2020 22:40:28 +0300
Subject: [PATCH] =?UTF-8?q?selfcheck.py:=20don=E2=80=99t=20fall=20when=20R?=
 =?UTF-8?q?OS=5FHOSTNAME=20is=20not=20set?=
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---
 clover/src/selfcheck.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clover/src/selfcheck.py b/clover/src/selfcheck.py
index 59defb5d..1a3cddf1 100755
--- a/clover/src/selfcheck.py
+++ b/clover/src/selfcheck.py
@@ -701,7 +701,7 @@ def check_preflight_status():
 
 @check('Network')
 def check_network():
-    ros_hostname = os.environ.get('ROS_HOSTNAME').strip()
+    ros_hostname = os.environ.get('ROS_HOSTNAME', '').strip()
 
     if not ros_hostname:
         failure('no ROS_HOSTNAME is set')