From 0501ba2bac986c2330fcceda897747ac3ee878d2 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Wed, 4 Aug 2021 12:26:19 +0300
Subject: [PATCH] watcher send changes only on non nil

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 consul.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/consul.go b/consul.go
index b4eae0c..9890533 100644
--- a/consul.go
+++ b/consul.go
@@ -247,9 +247,10 @@ func (w *consulWatcher) run() {
 					delete(dstmp, sk)
 				}
 			}
-
-			w.vchan <- dstmp
-			src = dst
+			if len(dstmp) > 0 {
+				w.vchan <- dstmp
+				src = dst
+			}
 		}
 	}
 }