When initializing a memory block, the shadow area record of the first
memory block is used first.When uninitializing, unpoison is required, otherwise the memory will be marked incorrectly.
The following case will cause problems:
void *mem = malloc(1024);
struct mm_heap_s *a = mm_initialize("hello", mem, 1024);
int *b = mm_malloc(a, sizeof(int *));
*b = 100;
printf("Hello, World!! %d\n", *b);
mm_free(a, b);
mm_uninitialize(a);
free(mem);
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
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