https://git.ruby-lang.org/ruby.git/commit/?id=e593d5b31a

From e593d5b31a13c59f9af07a2a6012c09bae7477d1 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 30 Aug 2019 11:18:23 +0900
Subject: Suppress uninitialized instance variable warnings [ci skip]


diff --git a/tool/lib/vcs.rb b/tool/lib/vcs.rb
index e38db07..ca5c471 100644
--- a/tool/lib/vcs.rb
+++ b/tool/lib/vcs.rb
@@ -305,20 +305,18 @@ class VCS https://github.com/ruby/ruby/blob/trunk/tool/lib/vcs.rb#L305
     end
 
     def url
-      unless @url
+      @url ||= begin
         url = get_info[/<root>(.*)<\/root>/, 1]
         @url = URI.parse(url+"/") if url
       end
-      @url
     end
 
     def wcroot
-      unless @wcroot
+      @wcroot ||= begin
         info = get_info
         @wcroot = info[/<wcroot-abspath>(.*)<\/wcroot-abspath>/, 1]
         @wcroot ||= self.class.search_root(@srcdir)
       end
-      @wcroot
     end
 
     def branch(name)
-- 
cgit v0.10.2


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