From f1d08f251fb96c40d35a93bb209aa8f96e6db2eb Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Mon, 19 Aug 2019 13:46:00 +0300
Subject: [PATCH] fix panic: negative WaitGroup counter

avoid double wait group Done()

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 server/rpc_server.go | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/server/rpc_server.go b/server/rpc_server.go
index 5fb4af29..f7ce74ec 100644
--- a/server/rpc_server.go
+++ b/server/rpc_server.go
@@ -278,16 +278,13 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 			delete(sockets, id)
 			mtx.Unlock()
 
-			// once done serving signal we're done
+			// signal we're done
 			if s.wg != nil {
 				s.wg.Done()
 			}
+
 		}(id, psock)
 
-		// signal we're done
-		if s.wg != nil {
-			s.wg.Done()
-		}
 	}
 }