Fix missing require.

ioquatix · ioquatix · commit 010b28dfe970 · 2021-06-23T19:52:27.000+12:00
diff --git a/lib/reline/ansi.rb b/lib/reline/ansi.rb
@@ -1,4 +1,5 @@
 require 'io/console'
+require 'io/wait'
 require 'timeout'
 require_relative 'terminfo'
 
