Function bitmap_grow

ewah/bitmap.c:45–50

}

static void bitmap_grow(struct bitmap *self, size_t word_alloc)
{
	size_t old_size = self->word_alloc;
	ALLOC_GROW(self->words, word_alloc, self->word_alloc);
	MEMZERO_ARRAY(self->words + old_size, self->word_alloc - old_size);
}

void bitmap_set(struct bitmap *self, size_t pos)
{