fix warning

diff --git a/munin/usb-wde1_ b/munin/usb-wde1_
index 27e7bfd8bcab1716a41c7c518cb2334c76c1eca5..6bae030f690701732e97909288d1cfdce993ee91 100755 (executable)
--- a/munin/usb-wde1_
+++ b/munin/usb-wde1_
@@ -82,7 +82,7 @@ done
 
 
 if [ "$1" = "config" ]; then
-    if [ "$host_name" != "" ]; then
+    if [ "x$host_name" != "x" ]; then
         echo "host_name $host_name"
     fi
     if [ "$TYPE" = "temperature" ]; then