procd: allow adding empty strings to arrays

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Backport of r42456

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42458 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/system/procd/files/procd.sh b/package/system/procd/files/procd.sh
index 1b19ba9..6d4cd9e 100644 (file)
--- a/package/system/procd/files/procd.sh
+++ b/package/system/procd/files/procd.sh
@@ -75,7 +75,7 @@ _procd_close_service() {
 }
 
 _procd_add_array_data() {
-       while [ -n "$1" ]; do
+       while [ "$#" -gt 0 ]; do
                json_add_string "" "$1"
                shift
        done