Fix mutable string syntax

2019-04-26 23:03:40 +08:00 · 2019-04-26 23:03:40 +08:00 · 5c83729be9
commit 5c83729be9
parent e18c5c1291
1 changed files with 1 additions and 1 deletions
--- a/Library/Homebrew/utils/github.rb
+++ b/Library/Homebrew/utils/github.rb
@ -47,7 +47,7 @@ module GitHub
  class AuthenticationFailedError < Error
    def initialize(github_message)
      @github_message = github_message
-      message += "GitHub #{github_message}:"
+      message = +"GitHub #{github_message}:"
      if ENV["HOMEBREW_GITHUB_API_TOKEN"]
        message << <<~EOS
          HOMEBREW_GITHUB_API_TOKEN may be invalid or expired; check: