Fix small bug in visitor verification

Author: weswigham

src/compiler/visitorPublic.ts

@@ -520,7 +520,7 @@ namespace ts {
             case SyntaxKind.NamedTupleMember:
                 return updateNamedTupleMember(<NamedTupleMember>node,
                     visitNode((<NamedTupleMember>node).dotDotDotToken, visitor, isToken),
-                    visitNode((<NamedTupleMember>node).name, visitor, isIdentifierName),
+                    visitNode((<NamedTupleMember>node).name, visitor, isIdentifier),
                     visitNode((<NamedTupleMember>node).questionToken, visitor, isToken),
                     visitNode((<NamedTupleMember>node).type, visitor, isTypeNode),
                 );