Replace @location with location as deliver_method_spec.rb now uses rs…

…pec's let(:location) to define it in all tests.

spec/letter_opener/delivery_method_spec.rb

@@ -177,9 +177,9 @@
       end
       attachments[File.basename(__FILE__)] = File.read(__FILE__)
     end
-    attachment_path = Dir["#{@location}/*/attachments/#{File.basename(__FILE__)}"].first
+    attachment_path = Dir["#{location}/*/attachments/#{File.basename(__FILE__)}"].first
     File.exists?(attachment_path).should == true
-    text = File.read(Dir["#{@location}/*/plain.html"].first)
+    text = File.read(Dir["#{location}/*/plain.html"].first)
     text.should include(File.basename(__FILE__))
   end
 
@@ -195,9 +195,9 @@
         body "Here's an image: <img src='#{url}' />"
       end
     end
-    attachment_path = Dir["#{@location}/*/attachments/#{File.basename(__FILE__)}"].first
+    attachment_path = Dir["#{location}/*/attachments/#{File.basename(__FILE__)}"].first
     File.exists?(attachment_path).should == true
-    text = File.read(Dir["#{@location}/*/rich.html"].first)
+    text = File.read(Dir["#{location}/*/rich.html"].first)
     mail.parts[0].body.should include(mail.attachments[0].url)
     text.should_not include(mail.attachments[0].url)
     text.should include("attachments/#{File.basename(__FILE__)}")