From a998c364f4394b30ca45f7e100c51652d26389d6 Mon Sep 17 00:00:00 2001
From: Kid <44045911+kidonng@users.noreply.github.com>
Date: Mon, 14 Jun 2021 23:19:21 +0800
Subject: [PATCH] Reduce potential modifications to frozen string

---
 Library/Homebrew/requirement.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/requirement.rb b/Library/Homebrew/requirement.rb
index 33e97cf28f..ce4db612a1 100644
--- a/Library/Homebrew/requirement.rb
+++ b/Library/Homebrew/requirement.rb
@@ -142,8 +142,8 @@ class Requirement
 
   def infer_name
     klass = self.class.name || self.class.to_s
-    klass.sub!(/(Dependency|Requirement)$/, "")
-    klass.sub!(/^(\w+::)*/, "")
+    klass = klass.sub(/(Dependency|Requirement)$/, "")
+    klass = klass.sub(/^(\w+::)*/, "")
     return klass.downcase if klass.present?
 
     return @cask if @cask.present?