Use match? instead of =~ when MatchData is not used (#34150).

Patch by Go MAEDA.


git-svn-id: http://svn.redmine.org/redmine/trunk@20168 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/setting.rb

@@ -186,7 +186,7 @@ class Setting < ActiveRecord::Base
     if settings.key?(:mail_from)
       begin
         mail_from = Mail::Address.new(settings[:mail_from])
-        raise unless mail_from.address =~ EmailAddress::EMAIL_REGEXP
+        raise unless EmailAddress::EMAIL_REGEXP.match?(mail_from.address)
       rescue
         messages << [:mail_from, l('activerecord.errors.messages.invalid')]
       end