procd: allow adding empty strings to arrays

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

SVN-Revision: 42458

diff --git a/package/system/procd/files/procd.sh b/package/system/procd/files/procd.sh
index 1b19ba93f673963410c99e80d49f0c8c494cfcea..6d4cd9e11476866b53c0e99bc28ecb7ff1540f68 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