use-of-uninitialized-value in pixGetCmapHistogramInRect

use-of-uninitialized-value in pixGetCmapHistogramInRect: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). MemorySanitizer: use-of-uninitialized-value in function pixGetCmapHistogramInRect in file leptonica/src/pix4.c