From c2b5f8bc4aa5c8ec53db40febca1b467669ad816 Mon Sep 17 00:00:00 2001
From: Erik Grinaker <erik@interchain.berlin>
Date: Mon, 4 Jan 2021 14:56:01 +0100
Subject: [PATCH] abci/grpc: fix invalid mutex handling in StopForError()
 (#5849)

Fixes #5840.
---
 abci/client/grpc_client.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/abci/client/grpc_client.go b/abci/client/grpc_client.go
index 0f3aa75a5..b375c6cc9 100644
--- a/abci/client/grpc_client.go
+++ b/abci/client/grpc_client.go
@@ -129,11 +129,11 @@ func (cli *grpcClient) OnStop() {
 }
 
 func (cli *grpcClient) StopForError(err error) {
-	cli.mtx.Lock()
 	if !cli.IsRunning() {
 		return
 	}
 
+	cli.mtx.Lock()
 	if cli.err == nil {
 		cli.err = err
 	}