From 34aaa9f3dc4ef851d5ecbb3e97d1a0fdf946898b Mon Sep 17 00:00:00 2001
From: simono41 <simono41>
Date: Sun, 1 Apr 2018 16:59:20 +0200
Subject: [PATCH] fix

---
 arch-install | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch-install b/arch-install
index 4c4133f..432dad6 100755
--- a/arch-install
+++ b/arch-install
@@ -72,8 +72,10 @@ function secureumount() {
         umount ${device}1
     fi
 
-    if cat /proc/mounts | grep ${usbkeydevice} > /dev/null; then
-        umount ${usbkeydevice}
+    if [ -n ${usbkeydevice} ]; then
+      if cat /proc/mounts | grep ${usbkeydevice} > /dev/null; then
+          umount ${usbkeydevice}
+      fi
     fi
 
 }