unbound: Import upstream 0ee44ef3 when ENOBUFS is returned
From upstream 0ee44ef3:
- Fix send of udp retries when ENOBUFS is returned. It stops looping and also waits for the condition to go away. Reported by Florian Obser.
PR: 274352
MFC after: 3 days
Merge commit '292d51198aa319c58f534549851e9c28486abdf4'