suppress error message from mkdir

diff --git a/storage.sh b/storage.sh
index 8939fdc7c83fcb9bdde8cc1738ed1e4baabc3963..f5a0ac6c58feb4de7ae8285b32f28e4b4c47780d 100755 (executable)
--- a/storage.sh
+++ b/storage.sh
@@ -28,7 +28,7 @@ LOCK(){
     return 1
   fi
 
-  while ! mkdir "$lock"; do
+  while ! mkdir "$lock" 2>&-; do
     block="$(cat "$lock/pid" || printf 1)"
     if ! { ps -eo pid |grep -qwF "$block"; }; then
       printf 'Overriding stale lock: %s\n' "$lock" >&2