Parse a MIME type expects a string

Author: annevk

fetch.bs

@@ -911,8 +911,8 @@ is a <dfn export>CORS-safelisted request-header</dfn>, run these steps:
      <li><p>If <var>value</var> contains a <a>CORS-unsafe request-header byte</a>, then return
      false.
 
-     <li><p>Let <var>mimeType</var> be the result of <a lt="parse a MIME type">parsing</a>
-     <var>value</var>.
+     <li><p>Let <var>mimeType</var> be the result of <a lt="parse a MIME type">parsing</a> the
+     result of <a>isomorphic decoding</a> <var>value</var>.
 
      <li><p>If <var>mimeType</var> is failure, then return false.