[ruby/reline] Splat is always an Array

https://github.com/ruby/reline/commit/82095bd62b

lib/reline/config.rb

@@ -93,7 +93,7 @@ class Reline::Config
   end
 
   def editing_mode_is?(*val)
-    (val.respond_to?(:any?) ? val : [val]).any?(@editing_mode_label)
+    val.any?(@editing_mode_label)
   end
 
   def keymap