skip content-length calculation

app/controllers/media_controller.rb

@@ -4,7 +4,6 @@ class MediaController < ApplicationController
   before_action :load_blob
 
   def show
-    @size = @blob.byte_size
     if @blob.variable?
       variant_service = VariantService.compute(@blob, params[:filename_with_transformations], params[:format])
       transformations = variant_service.transformations
@@ -12,13 +11,11 @@ class MediaController < ApplicationController
         blob_or_variant_url = url_for @blob
       else
         variant = @blob.variant transformations
-        @size = variant.processed.image.byte_size
         blob_or_variant_url = url_for variant
       end
     else
       blob_or_variant_url = url_for(@blob)
     end
-    response.headers["Content-Length"] = "#{@size}"
     redirect_to blob_or_variant_url
   end