From fe7ba05e38c294f2163d0a2c1ea226712e20201b Mon Sep 17 00:00:00 2001
From: vyzo <vyzo@hackzen.org>
Date: Tue, 9 Apr 2019 14:00:03 +0300
Subject: [PATCH] delete empty address sets on observed address set gc

---
 p2p/protocol/identify/obsaddr.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/p2p/protocol/identify/obsaddr.go b/p2p/protocol/identify/obsaddr.go
index 53a5f9c5b..b0c8b19c7 100644
--- a/p2p/protocol/identify/obsaddr.go
+++ b/p2p/protocol/identify/obsaddr.go
@@ -160,7 +160,11 @@ func (oas *ObservedAddrSet) gc() {
 				filteredAddrs = append(filteredAddrs, a)
 			}
 		}
-		oas.addrs[local] = filteredAddrs
+		if len(filteredAddrs) > 0 {
+			oas.addrs[local] = filteredAddrs
+		} else {
+			delete(oas.addrs, local)
+		}
 	}
 }