From 2833f5b3178c5c4f8e0174363bce1e78d4927c84 Mon Sep 17 00:00:00 2001
From: Andrej Zavgorodnij <a.zavgorodny@corp.mail.ru>
Date: Wed, 22 Jul 2020 15:56:31 +0300
Subject: [PATCH] feat: added QR code functionality

---
 qr/qr_read.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/qr/qr_read.go b/qr/qr_read.go
index 882bcdb..1344028 100644
--- a/qr/qr_read.go
+++ b/qr/qr_read.go
@@ -2,6 +2,7 @@ package qr
 
 import (
 	"fmt"
+	"log"
 	"time"
 
 	"github.com/makiuchi-d/gozxing"
@@ -18,8 +19,16 @@ func ReadQRFromCamera() (string, error) {
 	}
 	window := gocv.NewWindow("Hello")
 
-	defer webcam.Close()
-	defer window.Close()
+	defer func() {
+		if err := webcam.Close(); err != nil {
+			log.Fatalf("failed to close camera: %v", err)
+		}
+	}()
+	defer func() {
+		if err := window.Close(); err != nil {
+			log.Fatalf("failed to close camera window: %v", err)
+		}
+	}()
 
 	img := gocv.NewMat()
 	tk := time.NewTimer(timeToScan)