Enable ASSERT(attribute.nameRange.start) in AtomicHTMLToken::initializeAttributes

Source/core/html/parser/AtomicHTMLToken.h

Index: Source/core/html/parser/AtomicHTMLToken.h
diff --git a/Source/core/html/parser/AtomicHTMLToken.h b/Source/core/html/parser/AtomicHTMLToken.h
index dc0e54eb48ba86845404c4648c690af4547c2af4..7254ab88480436a43b5527f667ba7f590ad5527c 100644
--- a/Source/core/html/parser/AtomicHTMLToken.h
+++ b/Source/core/html/parser/AtomicHTMLToken.h
@@ -233,9 +233,7 @@ inline void AtomicHTMLToken::initializeAttributes(const HTMLToken::AttributeList
         if (attribute.name.isEmpty())
             continue;
 
-        // FIXME: We should be able to add the following ASSERT once we fix
-        // https://bugs.webkit.org/show_bug.cgi?id=62971
-        //   ASSERT(attribute.nameRange.start);
+        ASSERT(attribute.nameRange.start);
         ASSERT(attribute.nameRange.end);
         ASSERT(attribute.valueRange.start);
         ASSERT(attribute.valueRange.end);