Update mock.cr

Updated mock.cr for Crystal 0.31.1 per Crystal API breaking change crystal-lang/crystal#7085 sorry for 2 PRs. I don't know how to combine 2 edits on github...
vectorselector · Nov 1, 2019 · 3d448be · 3d448be
1 parent d6c5391
commit 3d448be
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/mailer/mock.cr b/src/mailer/mock.cr
@@ -22,7 +22,7 @@ module Mailer
       attachments = message.attachments
       inline = message.inline
       io = IO::Memory.new
-      m = HTTP::Multipart::Builder.new(io)
+      m = MIME::Multipart::Builder.new(io)
       m.content_type("form-data")
       add m, "from", message.from
       add m, "to", to