фикс

src/mem.c

@@ -73,9 +73,9 @@ static bool block_splittable(struct block_header* restrict block, size_t query)
 
 static bool split_if_too_big(struct block_header* block, size_t query) {
   if (block_splittable(block, query)) {
-    const block_capacity new_capacity = { .bytes = block->capacity.bytes - (query + offsetof(struct block_header, contents)) };
+    const block_size new_size = { .bytes = block->capacity.bytes - (query + offsetof(struct block_header, contents)) };
     block->capacity.bytes = query;
-    block_init(block_after(block), size_from_capacity(new_capacity), block->next);
+    block_init(block_after(block), new_size, block->next);
     block->next = block_after(block);
 
     return  true;