Don't warn on #from when not in an AR object. Fixes #423

lib/brakeman/checks/check_sql.rb

@@ -134,6 +134,7 @@ class Brakeman::CheckSQL < Brakeman::BaseCheck
   #
   def process_result result
     return if duplicate?(result) or result[:call].original_line
+    return if result[:target].nil? && !active_record_models.include?(result[:location][:class])
 
     call = result[:call]
     method = call.method

test/apps/rails3/app/models/notifier.rb

+class Notifier < ActionMailer::Base
+  def nsfree_deactivation_heroku(account, allowed, used)
+    # ...   
+    subject "#{Zerigo.service_provider[:company_name]} add-on at Heroku: #{Zerigo.sites[:ns][:app_name]} service deactivated"
+    from Zerigo.service_provider[:company_support_email]
+    recipients rcpts
+    bcc Zerigo.service_provider[:company_bcc_email]
+    sent_on Time.now
+
+    body :allowed => allowed, :used => used, :account => account
+  end
+end