Please describe the problem:
Every function in this file should g_free() the result of the primitive glib calls, and it is not. For instance:

std::string uri_escape_string(const std::string& unescaped, const std::string& reserved_chars_allowed, bool allow_utf8)
{
  const gchar* cresult = g_uri_escape_string(unescaped.c_str(), reserved_chars_allowed.c_str(), allow_utf8);
  return Glib::convert_const_gchar_ptr_to_stdstring(cresult);
}

should g_free() cresult.

Steps to reproduce:
look at the source.

Actual results:
it leaks.

Expected results:
it not to leak.

Does this happen every time?
yes

Other information:
no.