munin-plugins.conf in rubber-2.0.0.pre2

- old
+ new

@@ -3,9 +3,9 @@
 %>
 
 # munin-node clears out enviroment variables, so we need to add these in
 # to make sure we are running the correct ruby (rvm env vars, plus paths)
 [*]
-<%- ENV.select {|k, v| k =~ /rvm|ruby|bundler|gem|path/i }.each do |k, v| -%>
+<%- ENV.select {|k, v| k =~ /rvm|ruby|bundler|gem|path/i; v != "" }.each do |k, v| -%>
 env.<%= k %> <%= v %>
 <%- end -%>
 env.RUBYOPT rubygems