use-of-uninitialized-value in Botan::word add(unsigned

use-of-uninitialized-value in Botan::word add(unsigned: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). MemorySanitizer: use-of-uninitialized-value in function Botan::word add(unsigned long, unsigned long, unsigned long) in file botan/build/include/botan/internal/mp asmi.h