Process all pending lazy loading intersection observations

Otherwise images outside the viewport can prevent loading of images
inside the viewport, depending on DOM order.

Author: shannonbooth

source

@@ -37727,14 +37727,14 @@ interface <dfn interface>HTMLMediaElement</dfn> : <span>HTMLElement</span> {
    <li><p>Let <var>resumptionSteps</var> be the <span>media element</span>'s <span>lazy load
    resumption steps</span>.</p></li>
 
-   <li><p>Let <var>posterResumptionSteps</var> be null.</p>
+   <li><p>Let <var>posterResumptionSteps</var> be null.</p></li>
 
-   <p>If the <span>media element</span> is a <code>video</code> element, then set
+   <li><p>If the <span>media element</span> is a <code>video</code> element, then set
    <var>posterResumptionSteps</var> to the <code>video</code> element's <span>poster lazy load
    resumption steps</span>.</p></li>
 
    <li><p>If <var>resumptionSteps</var> is null and <var>posterResumptionSteps</var> is null, then
-   return.</p></li>
+   continue.</p></li>
 
    <li><p>If <var>resumptionSteps</var> is not null, then:</p>