use-of-uninitialized-value in crypt free volume key

use-of-uninitialized-value in crypt free volume key: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). MemorySanitizer: use-of-uninitialized-value in function crypt free volume key in file cryptsetup/lib/volumekey.c