this was overkill

CHANGELOG.md

@@ -61,7 +61,6 @@
 - Begin making available a version of the script with the updater disabled.
 - The removal of slugs from the URL when you open a thread is now optional, and can be disabled by unchecking `Normalize URL`.
 - The boards and file extensions for which a Sauce link is displayed can now be controlled by adding `;boards:[list]` and `types:[list]` respectively.
-- Restrict Sauce links to `http` and `https` to prevent malicious script installation.
 - Although usually not needed, `%%` can be used in format specifiers to write a literal `%`.
 - Various bugfixes.
 

src/Images/Sauce.coffee

@@ -44,7 +44,6 @@ Sauce =
     a = Sauce.link.cloneNode true
     a.href = parts['url']
     a.textContent = parts['text']
-    return null unless /^https?:$/.test a.protocol
     a
   node: ->
     return if @isClone or !@file