==23724== Invalid free() / delete / delete[] / realloc()
==23724==    at 0x4A07991: operator delete(void*) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==23724==    by 0x62CC3D: GenElementManager::~GenElementManager() (mapgen.cpp:296)
==23724==    by 0x57D4FF: OreManager::~OreManager() (mg_ore.h:97)
==23724==    by 0x57A807: EmergeManager::~EmergeManager() (emerge.cpp:154)
==23724==    by 0x689090: Server::~Server() (server.cpp:412)
==23724==    by 0x6894D2: Server::~Server() (server.cpp:430)
==23724==    by 0x599264: Game::~Game() (game.cpp:1630)
==23724==    by 0x5A482B: the_game(bool*, bool, InputHandler*, irr::IrrlichtDevice*, irr::gui::IGUIFont*, std::string const&, std::string const&, std::string const&, std::string const&, unsigned short, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >&, ChatBackend&, SubgameSpec const&, bool) (game.cpp:4179)
==23724==    by 0x6094E1: main (main.cpp:1878)
==23724==  Address 0x15b70c68 is 8 bytes inside a block of size 96 alloc'd
==23724==    at 0x4A06965: operator new(unsigned long) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==23724==    by 0x57D584: OreManager::create(int) (mg_ore.h:103)
==23724==    by 0x4B7690: ModApiMapgen::l_register_ore(lua_State*) (l_mapgen.cpp:514)
==23724==    by 0x6FC5F9: luaD_precall (ldo.c:319)
==23724==    by 0x7115B6: luaV_execute (lvm.c:587)
==23724==    by 0x6FC89E: luaD_call (ldo.c:377)
==23724==    by 0x6F7866: lua_call (lapi.c:782)
==23724==    by 0x71330D: luaB_dofile (lbaselib.c:329)
==23724==    by 0x6FC5F9: luaD_precall (ldo.c:319)
==23724==    by 0x7115B6: luaV_execute (lvm.c:587)
==23724==    by 0x6FC89E: luaD_call (ldo.c:377)
==23724==    by 0x6F78D0: f_call (lapi.c:800)