From c3710b7f5242ef4d231413c2a4e50cf9011d2a05 Mon Sep 17 00:00:00 2001
From: Xinghai Sun <sunxinghai1216@gmail.com>
Date: Fri, 15 Sep 2017 23:13:32 +0800
Subject: [PATCH] Add wget return check.

---
 utils/utility.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/utils/utility.sh b/utils/utility.sh
index f242b764..baae0474 100644
--- a/utils/utility.sh
+++ b/utils/utility.sh
@@ -12,6 +12,10 @@ download() {
     fi
 
     wget -c $URL -O "$TARGET"
+    if [ $? -ne 0 ]; then
+        return 1
+    fi
+
     md5_result=`md5sum $TARGET | awk -F[' '] '{print $1}'`
     if [ ! $MD5 == $md5_result ]; then
         return 1