Valgrind warning in unix socket

==18505== Invalid read of size 8
==18505== at 0x85E5D5: mysql_unix_socket_protocol::Protocol::getFileDescriptors(std::vector<int, std::allocator<int> >&) (protocol.cc:126)
==18505== by 0x63766E: drizzled::plugin::Listen::setup() (listen.cc:67)
==18505== by 0x52ADD0: main (main.cc:312)
==18505== Address 0x6771ce8 is 88 bytes inside a block of size 89 alloc'd==18505== at 0x4A05974: operator new(unsigned long) (vg_replace_malloc.c:220)==18505== by 0x3F3DC9C368: std::string::_Rep::_S_create(unsigned long, unsigned long, std::allocator<char> const&) (new_allocator.h:89)
==18505== by 0x3F3DC9D14A: std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned long) (basic_string.tcc:630)==18505== by 0x3F3DC9D59B: std::string::reserve(unsigned long) (basic_string.tcc:511)
==18505== by 0x52BFE7: boost::filesystem::basic_path<std::string, boost::filesystem::path_traits>::operator/=(char const*) (basic_string.h:918)==18505== by 0x56587A: void boost::program_options::validate<boost::filesystem::basic_path<std::string, boost::filesystem::path_traits>, char>(boost::any&, std::vec
tor<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&, boost::filesystem::basic_path<std::string, boost::filesystem::path_traits>*, long) (path.hpp:204)==18505== by 0x3F4083906C: boost::program_options::value_semantic_codecvt_helper<char>::parse(boost::any&, std::vector<std::string, std::allocator<std::string> > co
nst&, bool) const (value_semantic.cpp:38)==18505== by 0x3F40835F38: boost::program_options::store(boost::program_options::basic_parsed_options<char> const&, boost::program_options::variables_map&, bool) (variables_map.cpp:75)==18505== by 0x55568A: drizzled::init_common_variables(int, char**, drizzled::module::Registry&) (drizzled.cc:1453)==18505== by 0x52AB58: main (main.cc:249)
==18505==