Error when toggling pipeworks_enable_item_tags

[FeXoR]

Setting pipeworks_enable_item_tags = false in a game that already contains injectors with tags set this error occurs in Minetest 5.8:
AsyncErr: Lua: Runtime error from mod '??' in callback environment_Step(): /home/fexor/.minetest/mods/pipeworks/filter-injector.lua:140: attempt to call field 'sanitize_tags' (a nil value) stack traceback: /home/fexor/.minetest/mods/pipeworks/filter-injector.lua:140: in function 'punch_filter' /home/fexor/.minetest/mods/pipeworks/filter-injector.lua:516: in function 'action_on' /home/fexor/.minetest/mods/mesecons/mesecons/internal.lua:184: in function </home/fexor/.minetest/mods/mesecons/mesecons/internal.lua:177> ...e/fexor/.minetest/mods/mesecons/mesecons/actionqueue.lua:137: in function 'execute' ...e/fexor/.minetest/mods/mesecons/mesecons/actionqueue.lua:111: in function <...e/fexor/.minetest/mods/mesecons/mesecons/actionqueue.lua:73> /usr/share/minetest/builtin/common/register.lua:26: in function </usr/share/minetest/builtin/common/register.lua:12>

[FeXoR]

With this fix I can at least enter the game, yes.

What remains is:

1. Tag tube becomes an unknown node throwing:
   2024-03-23 11:44:44: ERROR[Server]: Item "pipeworks:tag_tube_111011" not defined at position (-4,15,64)
   The game keeps working ofc. and I guess that's normal?

2. At first enter of the formspec of an injector the tag selection widget is still shown - only after reopening it it seems to have been removed.

So in general it works and I'm probably just nitpicking :D

[Luke aka SwissalpS]

yeah, 1 and 2 are expected to happen in a world that has some previous function deactivated. I don't consider that worth writing an LBM and make things more complicated than needed.

Many thanks for testing and commenting :D