Compute qName once we've filled in the local array.

Since it depends on it.

Fixes #91

src/nu/validator/htmlparser/impl/AttributeName.java

@@ -351,14 +351,14 @@ private AttributeName(@NsUri @NoLength String[] uri,
         this.prefix = prefix;
         // [NOCPP[
         this.local = new String[4];
-        this.qName = COMPUTE_QNAME(local, prefix);
         this.flags = flags;
         // ]NOCPP]
         this.local[HTML] = html;
         this.local[MATHML] = mathml;
         this.local[SVG] = svg;
         // [NOCPP[
         this.local[HTML_LANG] = htmlLang;
+        this.qName = COMPUTE_QNAME(local, prefix);
         // ]NOCPP]
         // CPPONLY: this.custom = false;
     }