heap-buffer-overflow in FDKmemset

heap-buffer-overflow in FDKmemset: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). AddressSanitizer: heap-buffer-overflow in function FDKmemset in file fdk-aac/libSYS/src/genericStds.cpp