Editorial: use break in navigate algorithm rather than a variable

Also do not assume that all responses have a location URL (even though that would make more sense data-model-wise).

source

@@ -84514,10 +84514,10 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
    data-x="concept-request-origin">origin</span> to that <span>browsing context scope
    origin</span>.</p></li>
 
-   <li><p>Let <var>done</var> be false and <var>reservedEnvironment</var> be null.</p></li>
+   <li><p>Let <var>reservedEnvironment</var> be null.</p></li>
 
    <li>
-    <p>While <var>done</var> is false:</p>
+    <p>While true:</p>
 
     <ol>
      <li><p>Let <var>currentURL</var> be <var>response</var>'s <span
@@ -84563,7 +84563,7 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
      Content Security Policy?</span> algorithm returns "<code data-x="">Blocked</code>" when
      executed upon <var>request</var>, <var>navigationType</var>, <var>sourceBrowsingContext</var>,
      and <var>browsingContext</var>, then set <var>response</var> to a <span>network error</span>
-     and set <var>done</var> to true. <ref spec="CSP"></p></li>
+     and <span>break</span>. <ref spec="CSP"></p></li>
 
      <li>
       <p>Otherwise:</p>
@@ -84584,7 +84584,7 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
         data-x="concept-response-location-url">location URL</span> or the <span
         data-x="concept-response-location-url">location URL</span> is not a <span>URL</span> whose
         <span data-x="concept-url-scheme">scheme</span> is an <span>HTTP(S) scheme</span>,
-        then set <var>done</var> to true.</p>
+        then <span>break</span>.</p>
 
         <p class="note">Navigation handles redirects manually as navigation is the only place in
         the web platform that cares for redirects to <code data-x="mailto protocol">mailto:</code>
@@ -84595,8 +84595,9 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
     </ol>
    </li>
 
-   <li><p>If <var>response</var>'s <span data-x="concept-response-location-url">location URL</span>
-   is failure, then set <var>response</var> to a <span>network error</span>.</p></li>
+   <li><p>If <var>response</var> has a <span data-x="concept-response-location-url">location
+   URL</span> that is failure, then set <var>response</var> to a <span>network
+   error</span>.</p></li>
 
    <li><p>Otherwise, if <var>response</var> has a <span
    data-x="concept-response-location-url">location URL</span> that is a <span>URL</span> whose <span