use-of-uninitialized-value in distance multiply

use-of-uninitialized-value in distance multiply: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). MemorySanitizer: use-of-uninitialized-value in function distance multiply in file php-src/oniguruma/src/regcomp.c