use-of-uninitialized-value in rdata seek

use-of-uninitialized-value in rdata seek: a task in MiMo-V2.6-RL-harbor-cyber: MiMo-V2.6-RL Cyber (Harbor) (Harbor dataset). MemorySanitizer: use-of-uninitialized-value in function rdata seek in file knot-dns/src/libknot/rrtype/tsig.c