#80 crash on player disconnect

2022-09-13 04:04:53: ERROR[Main]: ServerError: AsyncErr: Lua: Runtime error from mod '??' in callback luaentity_Step(): /home/minetest/MeseCraft/builtin/common/vector.lua:122: a
ttempt to index local 'b' (a nil value)
2022-09-13 04:04:53: ERROR[Main]: stack traceback:
2022-09-13 04:04:53: ERROR[Main]:       /home/minetest/MeseCraft/builtin/common/vector.lua:122: in function 'dist2tgt'
2022-09-13 04:04:53: ERROR[Main]:       ...t/games/mesecraft/mods/ENTITIES/water_life/behaviors.lua:1224: in function 'func'
2022-09-13 04:04:53: ERROR[Main]:       .../MeseCraft/games/mesecraft/mods/ENTITIES/mobkit/init.lua:621: in function 'execute_queues'
2022-09-13 04:04:53: ERROR[Main]:       .../MeseCraft/games/mesecraft/mods/ENTITIES/mobkit/init.lua:848: in function 'func'
2022-09-13 04:04:53: ERROR[Main]:       .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function 'func'
2022-09-13 04:04:53: ERROR[Main]:       .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function 'func'
2022-09-13 04:04:53: ERROR[Main]:       .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function <.../minetest/MeseCraft/builtin/profiler/instrumentation.lua
:100>

``` 2022-09-13 04:04:53: ERROR[Main]: ServerError: AsyncErr: Lua: Runtime error from mod '??' in callback luaentity_Step(): /home/minetest/MeseCraft/builtin/common/vector.lua:122: a ttempt to index local 'b' (a nil value) 2022-09-13 04:04:53: ERROR[Main]: stack traceback: 2022-09-13 04:04:53: ERROR[Main]: /home/minetest/MeseCraft/builtin/common/vector.lua:122: in function 'dist2tgt' 2022-09-13 04:04:53: ERROR[Main]: ...t/games/mesecraft/mods/ENTITIES/water_life/behaviors.lua:1224: in function 'func' 2022-09-13 04:04:53: ERROR[Main]: .../MeseCraft/games/mesecraft/mods/ENTITIES/mobkit/init.lua:621: in function 'execute_queues' 2022-09-13 04:04:53: ERROR[Main]: .../MeseCraft/games/mesecraft/mods/ENTITIES/mobkit/init.lua:848: in function 'func' 2022-09-13 04:04:53: ERROR[Main]: .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function 'func' 2022-09-13 04:04:53: ERROR[Main]: .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function 'func' 2022-09-13 04:04:53: ERROR[Main]: .../minetest/MeseCraft/builtin/profiler/instrumentation.lua:107: in function <.../minetest/MeseCraft/builtin/profiler/instrumentation.lua :100> ```