From 273ebedc55a66de0ac361886270ab2539da17f7f Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Fri, 18 Mar 2016 00:28:30 -0700
Subject: [PATCH] [Fix] avoid an unbound variable when `nounset` bash option is
 set.

Per https://github.com/creationix/nvm/issues/868#issuecomment-198232952
---
 nvm.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nvm.sh b/nvm.sh
index 97d4845..21f3b89 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -92,7 +92,7 @@ if [ -z "${NVM_NODEJS_ORG_MIRROR-}" ]; then
   export NVM_NODEJS_ORG_MIRROR="https://nodejs.org/dist"
 fi
 
-if [ -z "$NVM_IOJS_ORG_MIRROR" ]; then
+if [ -z "${NVM_IOJS_ORG_MIRROR-}" ]; then
   export NVM_IOJS_ORG_MIRROR="https://iojs.org/dist"
 fi