Exit the loop on failure

Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2805)

crypto/asn1/bio_asn1.c

@@ -212,7 +212,7 @@ static int asn1_bio_write(BIO *b, const char *in, int inl)
                 wrmax = inl;
             ret = BIO_write(next, in, wrmax);
             if (ret <= 0)
-                break;
+                goto done;
             wrlen += ret;
             ctx->copylen -= ret;
             in += ret;