From c8ab2634c69749a0ef12631559c5565ce53dfe92 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 18 Nov 2018 23:29:40 +0000
Subject: [PATCH] update-deps: fix runtime error [ci skip]

* tool/update-deps (init_global): environment strings are frozen.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65791 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/update-deps | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/update-deps b/tool/update-deps
index 7c4d5d3319..f26cff26d5 100755
--- a/tool/update-deps
+++ b/tool/update-deps
@@ -239,7 +239,7 @@ DEPENDENCIES_SECTION_END_MARK = "\# AUTOGENERATED DEPENDENCIES END\n"
 
 def init_global
   ENV['LC_ALL'] = 'C'
-  if mkflag = ENV['GNUMAKEFLAGS'] and mkflag.sub!(/(\A|\s+)-j\d*(?=\s+|\z)/, '')
+  if mkflag0 = ENV['GNUMAKEFLAGS'] and (mkflag = mkflag0.sub(/(\A|\s+)-j\d*(?=\s+|\z)/, '')) != mkflag0
     mkflag.strip!
     ENV['GNUMAKEFLAGS'] = mkflag
   end