nobu	2018-01-18 11:44:50 +0900 (Thu, 18 Jan 2018)

  New Revision: 61897

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61897

  Log:
    resolv: use safe navigation operator
    
    * lib/resolv.rb (each_address): use safe navigation operator to
      avoid extra hash lookups, as well as each_name since r56890.

  Modified files:
    trunk/lib/resolv.rb
Index: lib/resolv.rb
===================================================================
--- lib/resolv.rb	(revision 61896)
+++ lib/resolv.rb	(revision 61897)
@@ -236,9 +236,7 @@ class Resolv https://github.com/ruby/ruby/blob/trunk/lib/resolv.rb#L236
 
     def each_address(name, &proc)
       lazy_initialize
-      if @name2addr.include?(name)
-        @name2addr[name].each(&proc)
-      end
+      @name2addr[name]&.each(&proc)
     end
 
     ##

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