*-map tests: Fix compilation error. * tests/test-array_map.c: Include <limits.h>, for CHAR_BIT. * tests/test-hash_map.c: Likewise. * tests/test-linkedhash_map.c: Likewise.

#define _GL_USE_STDLIB_ALLOC 1
#include <config.h>
#include "allocator.h"
#include <stdlib.h>
struct allocator const stdlib_allocator = { malloc, realloc, free, NULL };