[gnutls-devel] GnuTLS | Fix memleak in 'iov_store_grow' (!1277)

[Development of GNU's TLS library]

Daiki Ueno started a new discussion on lib/crypto-api.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1277#note_355871837

>  		s->data = gnutls_realloc(s->data, s->size);
>  		if (s->data == NULL)
>  			return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR);
> -		s->allocated = 1;
>  	} else {
>  		void *data = s->data;
>  		size_t size = s->size + length;
>  		s->data = gnutls_malloc(size);

Again, an issue in the original code, but we should check `s->data != NULL`.

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