shm: Introduce detailed error handling for invalid size
Enhanced error handling for wl_shm by introducing a distinct WL_SHM_ERROR_INVALID_SIZE error type for invalid. separates size validation from stride-related errors.
Edited by YaoBing Xiao
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Enhanced error handling for wl_shm by introducing a distinct WL_SHM_ERROR_INVALID_SIZE error type for invalid. separates size validation from stride-related errors.