Fix code style.

Library/Homebrew/cmd/update-report.rb

@@ -427,7 +427,7 @@ class ReporterHub
     @hash.update(report) { |_key, oldval, newval| oldval.concat(newval) }
   end
 
-  delegate :empty? => :@hash
+  delegate empty?: :@hash
 
   def dump
     # Key Legend: Added (A), Copied (C), Deleted (D), Modified (M), Renamed (R)

Library/Homebrew/test/support/helper/spec/shared_context/homebrew_cask.rb

@@ -5,10 +5,10 @@ require "test/support/helper/cask/install_helper"
 require "test/support/helper/cask/never_sudo_system_command"
 
 HOMEBREW_CASK_DIRS = {
-  :appdir      => Pathname.new(TEST_TMPDIR).join("cask-appdir"),
-  :prefpanedir => Pathname.new(TEST_TMPDIR).join("cask-prefpanedir"),
-  :qlplugindir => Pathname.new(TEST_TMPDIR).join("cask-qlplugindir"),
-  :servicedir  => Pathname.new(TEST_TMPDIR).join("cask-servicedir"),
+  appdir:      Pathname.new(TEST_TMPDIR).join("cask-appdir"),
+  prefpanedir: Pathname.new(TEST_TMPDIR).join("cask-prefpanedir"),
+  qlplugindir: Pathname.new(TEST_TMPDIR).join("cask-qlplugindir"),
+  servicedir:  Pathname.new(TEST_TMPDIR).join("cask-servicedir"),
 }.freeze
 
 RSpec.shared_context "Homebrew Cask", :needs_macos do