return;
return 0;
void from_backend(int is_stderr, char *data, int datalen){    unsigned char *p = (unsigned char *) data;    unsigned len = (unsigned) datalen;    /*     * stderr data is just spouted to local stderr and otherwise     * ignored.     */    if (is_stderr) {	fwrite(data, 1, len, stderr);	return;    }    inbuf_head = 0;    /*     * If this is before the real session begins, just return.     */    if (!outptr)	return;    if (outlen > 0) {	unsigned used = outlen;	if (used > len)	    used = len;	memcpy(outptr, p, used);	outptr += used;	outlen -= used;	p += used;	len -= used;    }    if (len > 0) {	if (pendsize < pendlen + len) {	    pendsize = pendlen + len + 4096;	    pending = (pending ? srealloc(pending, pendsize) :		       smalloc(pendsize));	    if (!pending)		fatalbox("Out of memory");	}	memcpy(pending + pendlen, p, len);	pendlen += len;    }}