fix lint failures with 1.31 (#5489)

scripts/wal2json/main.go

@@ -46,14 +46,17 @@ func main() {
 		if err == nil {
 			_, err = os.Stdout.Write([]byte("\n"))
 		}
+
 		if err == nil {
 			if endMsg, ok := msg.Msg.(cs.EndHeightMessage); ok {
 				_, err = os.Stdout.Write([]byte(fmt.Sprintf("ENDHEIGHT %d\n", endMsg.Height)))
 			}
 		}
+
 		if err != nil {
 			fmt.Println("Failed to write message", err)
-			os.Exit(1)
+			os.Exit(1) //nolint:gocritic
 		}
+
 	}
 }