use-of-uninitialized-value in ScaleQuantumToChar

use-of-uninitialized-value in ScaleQuantumToChar: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). MemorySanitizer: use-of-uninitialized-value in function ScaleQuantumToChar in file imagemagick/MagickCore/quantum.h