Editorial: clarify same origin-domain

We did not mean for anyone to think the domains could both be null but not identical.

Author: annevk

source

@@ -85978,16 +85978,15 @@ dictionary <dfn dictionary>DragEventInit</dfn> : <span>MouseEventInit</span> {
 
    <li>
     <p>If <var>A</var> and <var>B</var> are both <span data-x="concept-origin-tuple">tuple
-    origins</span>, run these substeps:</p>
+    origins</span>:</p>
 
     <ol>
      <li><p>If <var>A</var> and <var>B</var>'s <span data-x="concept-origin-scheme">schemes</span>
      are identical, and their <span data-x="concept-origin-domain">domains</span> are identical and
      non-null, then return true.</p></li>
 
      <li><p>Otherwise, if <var>A</var> and <var>B</var> are <span>same origin</span> and their
-     <span data-x="concept-origin-domain">domains</span> are identical and null, then return
-     true.</p></li>
+     <span data-x="concept-origin-domain">domains</span> are both null, return true.</p></li>
     </ol>
 
    <li><p>Return false.</p></li>