ruby-ng.eclass: Fix eclass doc warnings

Closes: https://bugs.gentoo.org/637868

diff --git a/eclass/ruby-ng.eclass b/eclass/ruby-ng.eclass
index 51ab397bb560b7c9f22b6aabf5a671270c17feb7..e9d0f33e55809c61571cce0def8ae08572e7fbcc 100644 (file)
--- a/eclass/ruby-ng.eclass
+++ b/eclass/ruby-ng.eclass
@@ -43,6 +43,7 @@
 # A String or Array of filenames of patches to apply to all implementations.
 
 # @ECLASS-VARIABLE: RUBY_OPTIONAL
+# @DEFAULT_UNSET
 # @DESCRIPTION:
 # Set the value to "yes" to make the dependency on a Ruby interpreter
 # optional and then ruby_implementations_depend() to help populate