Replace this with originalElement inside set an existing attribute value

Author: lukewarlow

dom.bs

@@ -8053,8 +8053,8 @@ string <var>value</var>, run these steps:
 
    <li><p>Let <var>verifiedValue</var> be the result of calling <a abstract-op>get
    Trusted Types-compliant attribute value</a> with <var>attribute</var>'s
-   <a for=Attr>local name</a>, <var>attribute</var>'s <a for=Attr>namespace</a>, <a>this</a>,
-   and <var>value</var>. [[!TRUSTED-TYPES]]
+   <a for=Attr>local name</a>, <var>attribute</var>'s <a for=Attr>namespace</a>,
+   <var>originalElement</var>, and <var>value</var>. [[!TRUSTED-TYPES]]
 
    <li><p>If <var>attribute</var>'s <a for=Attr>element</a> is null, then set <var>attribute</var>'s
    <a for=Attr>value</a> to <var>verifiedValue</var>, and return.