fix bug

Author: TysonAndre

src/ASTConverter/ASTConverter.php

@@ -757,7 +757,7 @@ private static function _init_handle_map() : array {
                     \ast\AST_NAMESPACE,
                     0,
                     [
-                        'name' => self::_phpparser_name_to_string($n->name),
+                        'name' => $n->name !== null ? self::_phpparser_name_to_string($n->name) : null,
                         'stmts' => isset($n->stmts) ? self::_phpparser_stmtlist_to_ast_node($n->stmts, $startLine) : null,
                     ],
                     $startLine

test_files/src/namespace.php

@@ -6,3 +6,6 @@
 namespace MyNS\Baz {
     function BazFunction() { }
 }
+namespace {
+    function xFunction() { }
+}