can't parse variadic function

[shi-yan]

example:

void simple_printf(const char* fmt, ...)
{}

result:

(translation_unit (function_definition type: (primitive_type) declarator: (function_declarator declarator: (identifier) parameters: (parameter_list (parameter_declaration (type_qualifier) type: (primitive_type) declarator: (pointer_declarator declarator: (identifier))))) body: (compound_statement)))

the variadic arguments are missing from the result

[jdrouhard]

Duplicate of #31