minor bug fix in `extra library folder` option
@@ -252,7 +252,7 @@ class PreferencesBridge(PioBridge):
return
current = config.get(environment, option_name)
- current = current[0] if current else None
+ current = current[0] if current else []
# get current value
if(not wipe and config.has_option(environment, option_name)):
