use-of-uninitialized-value in Mat VarRead4

use-of-uninitialized-value in Mat VarRead4: a task in MiMo-V2.6-RL-harbor-cyber: MiMo-V2.6-RL Cyber (Harbor) (Harbor dataset). MemorySanitizer: use-of-uninitialized-value in function Mat VarRead4 in file matio/src/mat4.c