Clarify null / not null checks for active speculative HTML parser

source

@@ -107474,7 +107474,7 @@ dictionary <dfn>StorageEventInit</dfn> : <span>EventInit</span> {
   particular <var>intended parent</var>, the UA must run the following steps:</p>
 
   <ol>
-   <li><p>If there is an <span>active speculative HTML parser</span>, then return the result of
+   <li><p>If the <span>active speculative HTML parser</span> is not null, then return the result of
    <span data-x="create a speculative mock element">creating a speculative mock element</span>
    given <var>given namespace</var>, the tag name of the given token, and the attributes of the
    given token.</p></li>
@@ -108208,7 +108208,7 @@ document.body.appendChild(text);
     <p><span data-x="acknowledge self-closing flag">Acknowledge the token's <i data-x="self-closing flag">self-closing
     flag</i></span>, if it is set.</p>
 
-    <p>If there is no <span>active speculative HTML parser</span>, then:</p>
+    <p>If the <span>active speculative HTML parser</span> is null, then:</p>
 
     <ol>
      <li><p id="meta-charset-during-parse">If the element has a <code
@@ -109708,7 +109708,7 @@ document.body.appendChild(text);
 
    <dt id="scriptEndTag">An end tag whose tag name is "script"</dt>
    <dd>
-    <p>If there is no <span>active speculative HTML parser</span> and the <span>JavaScript execution
+    <p>If the <span>active speculative HTML parser</span> is null and the <span>JavaScript execution
     context stack</span> is empty, then <span>perform a microtask checkpoint</span>.</p>
 
     <p>Let <var>script</var> be the <span>current node</span> (which will be a
@@ -109724,7 +109724,7 @@ document.body.appendChild(text);
 
     <p>Increment the parser's <span>script nesting level</span> by one.</p>
 
-    <p>If there is no <span>active speculative HTML parser</span>, then <span data-x="prepare a
+    <p>If the <span>active speculative HTML parser</span> is null, then <span data-x="prepare a
     script">prepare</span> the <var>script</var>. This might cause some script to execute, which
     might cause <span data-x="dom-document-write">new characters to be inserted into the
     tokenizer</span>, and might cause the tokenizer to output more tokens, resulting in a <a
@@ -111277,7 +111277,7 @@ document.body.appendChild(text);
     <p>Increment the parser's <span>script nesting level</span> by one. Set the <span>parser pause
     flag</span> to true.</p>
 
-    <p>If there is no <span>active speculative HTML parser</span> and the user agent supports SVG,
+    <p>If the <span>active speculative HTML parser</span> is null and the user agent supports SVG,
     then <a href="https://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process the
     SVG <code data-x="">script</code> element</a> according to the SVG rules. <ref spec=SVG></p>
 
@@ -111337,7 +111337,7 @@ document.body.appendChild(text);
   <ol>
    <!-- this happens as part of one of the tasks that runs the parser -->
 
-   <li><p>If there is an <span>active speculative HTML parser</span>, then <span>stop the
+   <li><p>If the <span>active speculative HTML parser</span> is not null, then <span>stop the
    speculative HTML parser</span> and return.</p></li>
 
    <li><p>Set the <span>current document readiness</span> to "<code data-x="">interactive</code>"
@@ -111540,7 +111540,7 @@ document.body.appendChild(text);
    parsing.)</p></li>
 
    <li>
-    <p>If <var>parser</var> already has an <span>active speculative HTML parser</span>, then
+    <p>If <var>parser</var>'s <span>active speculative HTML parser</span> is not null, then
     <span>stop the speculative HTML parser</span> for <var>parser</var>.</p>
 
     <p class="note">This can happen when <code data-x="dom-document-write">document.write()</code>