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-rw-r--r--ext/digest/md5/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/digest/md5/extconf.rb b/ext/digest/md5/extconf.rb
index 05a990c..dead9a2 100644
--- a/ext/digest/md5/extconf.rb
+++ b/ext/digest/md5/extconf.rb
@@ -1,4 +1,5 @@
# -*- coding: us-ascii -*-
+# frozen_string_literal: false
# $RoughId: extconf.rb,v 1.3 2001/08/14 19:54:51 knu Exp $
# $Id$