selectedcontent post-connection steps did not break out of the loop

In addition:
- Remove an unused ancestor variable.
- Early return for removed selectedcontent elements that are disabled.

Author: annevk

source

@@ -59159,9 +59159,8 @@ interface <dfn interface>HTMLSelectedContentElement</dfn> : <span>HTMLElement</s
   replaces them with a new copy of the DOM structure of the <code>select</code>'s selected
   <code>option</code> element.</p>
 
-  <p>Every <code>selectedcontent</code> element has a <dfn
-  data-x="selectedcontent-disabled">disabled</dfn> state, which is a boolean, initially set to
-  false.</p>
+  <p>Every <code>selectedcontent</code> element has a boolean <dfn
+  data-x="selectedcontent-disabled">disabled</dfn>, which is initially false.</p>
 
   <div algorithm>
   <p>To <dfn>update a <code>select</code>'s <code>selectedcontent</code></dfn> given a
@@ -59199,8 +59198,8 @@ interface <dfn interface>HTMLSelectedContentElement</dfn> : <span>HTMLElement</s
    <span>descendant</span> of <var>select</var> in <span>tree order</span> if any such element
    exists; otherwise return null.</p></li>
 
-   <li><p>If <var>selectedcontent</var> is <span data-x="selectedcontent-disabled">disabled</span>,
-   then return null.</p></li>
+   <li><p>If <var>selectedcontent</var>'s <span data-x="selectedcontent-disabled">disabled</span> is
+   true, then return null.</p></li>
 
    <li><p>Return <var>selectedcontent</var>.</p></li>
   </ol>
@@ -59274,10 +59273,8 @@ interface <dfn interface>HTMLSelectedContentElement</dfn> : <span>HTMLElement</s
   <ol>
    <li><p>Let <var>nearestSelectAncestor</var> be null.</p></li>
 
-   <li><p>Let <var>ancestor</var> be <var>selectedcontent</var>'s <span>parent</span>.</p></li>
-
    <li><p>Set <var>selectedcontent</var>'s <span data-x="selectedcontent-disabled">disabled</span>
-   state to false.</p></li>
+   to false.</p></li>
 
    <li>
     <p>For each <var>ancestor</var> of <var>selectedcontent</var>'s <span
@@ -59289,20 +59286,21 @@ interface <dfn interface>HTMLSelectedContentElement</dfn> : <span>HTMLElement</s
 
       <ol>
        <li><p>If <var>nearestSelectAncestor</var> is null, then set <var>nearestSelectAncestor</var>
-       to <var>select</var>.</p></li>
+       to <var>select</var> and <span>continue</span>.</p></li>
 
-       <li><p>Otherwise, set <var>selectedcontent</var>'s <span
-       data-x="selectedcontent-disabled">disabled</span> state to true.</p></li>
+       <li><p>Set <var>selectedcontent</var>'s <span
+       data-x="selectedcontent-disabled">disabled</span> to true and <span>break</span>.</p></li>
       </ol>
      </li>
 
      <li><p>If <var>ancestor</var> is an <code>option</code> element or a
      <code>selectedcontent</code> element, then set <var>selectedcontent</var>'s <span
-     data-x="selectedcontent-disabled">disabled</span> state to true.</p></li>
+     data-x="selectedcontent-disabled">disabled</span> to true and <span>break</span>.</p></li>
     </ol>
    </li>
 
-   <li><p>If <var>nearestSelectAncestor</var> is null or <var>nearestSelectAncestor</var> has the
+   <li><p>If <var>selectedcontent</var>'s <span data-x="selectedcontent-disabled">disabled</span> is
+   true, <var>nearestSelectAncestor</var> is null, or <var>nearestSelectAncestor</var> has the
    <code data-x="attr-select-multiple">multiple</code> attribute, then return.</p></li>
 
    <li><p>Run <span>update a <code>select</code>'s <code>selectedcontent</code></span> given
@@ -59318,6 +59316,9 @@ interface <dfn interface>HTMLSelectedContentElement</dfn> : <span>HTMLElement</s
   <var>selectedcontent</var> and <var>oldParent</var>, are:</p>
 
   <ol>
+   <li><p>If <var>selectedcontent</var>'s <span data-x="selectedcontent-disabled">disabled</span> is
+   true, then return.</p></li>
+
    <li>
     <p>For each <var>ancestor</var> of <var>selectedcontent</var>'s <span
     data-x="ancestor">ancestors</span>, in reverse <span>tree order</span>:</p>