evbuffer_expand
if (evbuffer_expand(buf, 64) < 0)
if (evbuffer_expand(buf, sz + 1) == -1)
if (evbuffer_expand(buf, datlen) == -1)
if (evbuffer_expand(buf, howmuch) == -1)
int evbuffer_expand(struct evbuffer *, size_t);
if (evbuffer_expand(buf, howmuch) == -1)
if (evbuffer_expand(buf, howmuch) == -1)