Crash when using the hammer on rope mod's rope starting node
https://forum.minetest.net/viewtopic.php?p=350005#p350005
2019-06-20 14:48:27: ERROR[Main]: ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'uniham' in callback item_OnUse(): ...test\mt510-38b\bin\..\mods\uniham\system\crush_nodes.lua:35: attempt to index local 'node_sounds' (a nil value)
2019-06-20 14:48:27: ERROR[Main]: stack traceback:
2019-06-20 14:48:27: ERROR[Main]: ...test\mt510-38b\bin\..\mods\uniham\system\crush_nodes.lua:35: in function <...test\mt510-38b\bin\..\mods\uniham\system\crush_nodes.lua:28>