From efe215cd60d7ac680c3bbe8f6dda1923beac092d Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Wed, 4 Aug 2021 12:25:29 +0300
Subject: [PATCH] config/default: watcher send changes only on non nil

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 config/default.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/config/default.go b/config/default.go
index f072daec..320abbd5 100644
--- a/config/default.go
+++ b/config/default.go
@@ -338,8 +338,10 @@ func (w *defaultWatcher) run() {
 					delete(dstmp, sk)
 				}
 			}
-			w.vchan <- dstmp
-			src = dst
+			if len(dstmp) > 0 {
+				w.vchan <- dstmp
+				src = dst
+			}
 		}
 	}
 }