1 files changed, 4 insertions, 1 deletions
diff --git a/common b/common
index 65f3362..c3c2bd5 100644
--- a/common
+++ b/common
@@ -46,6 +46,7 @@ declare -A fsck_types=([cramfs]=1
 
 out() { printf "$1 $2\n" "${@:3}"; }
 error() { out "==> ERROR:" "$@"; } >&2
+warning() { out "==> WARNING:" "$@"; } >&2
 msg() { out "==>" "$@"; }
 msg2() { out "  ->" "$@";}
 die() { error "$@"; exit 1; }
@@ -91,7 +92,9 @@ chroot_setup() {
 }
 
 chroot_teardown() {
-  umount "${CHROOT_ACTIVE_MOUNTS[@]}"
+  if (( ${#CHROOT_ACTIVE_MOUNTS[@]} )); then
+    umount "${CHROOT_ACTIVE_MOUNTS[@]}"
+  fi
   unset CHROOT_ACTIVE_MOUNTS
 }