Fix Lint/NonLocalExitFromIterator.

Library/.rubocop_todo.yml

@@ -42,11 +42,6 @@ Lint/NestedMethodDefinition:
     - 'Homebrew/dev-cmd/bottle.rb'
     - 'Homebrew/dev-cmd/test-bot.rb'
 
-# Offense count: 2
-Lint/NonLocalExitFromIterator:
-  Exclude:
-    - 'Homebrew/extend/pathname.rb'
-
 # Offense count: 28
 Lint/RescueException:
   Exclude:

Library/Homebrew/extend/pathname.rb

@@ -71,13 +71,13 @@ class Pathname
       when Array
         if src.empty?
           opoo "tried to install empty array to #{self}"
-          return
+          break
         end
         src.each { |s| install_p(s, File.basename(s)) }
       when Hash
         if src.empty?
           opoo "tried to install empty hash to #{self}"
-          return
+          break
         end
         src.each { |s, new_basename| install_p(s, new_basename) }
       else