Change variable check to match existing style

Signed-off-by: Tai Kedzierski <dch.tai@gmail.com>

Change variable check to match existing style
69ed323e · Tai Kedzierski · Stéphane Graber · 928ff122 · 69ed323e
Unverified Commit 69ed323e authored Mar 19, 2017 by Tai Kedzierski Committed by Stéphane Graber Mar 20, 2017
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lxc-download.in templates/lxc-download.in +1 -1

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--- a/templates/lxc-download.in
+++ b/templates/lxc-download.in
@@ -53,7 +53,7 @@ LXC_NAME=
 LXC_PATH=
 LXC_ROOTFS=

-if [ -z "${DOWNLOAD_KEYSERVER+x}" ]; then
+if [ -z "${DOWNLOAD_KEYSERVER:-}" ]; then
 	DOWNLOAD_KEYSERVER="hkp://pool.sks-keyservers.net"

 	# Deal with GPG over http proxy