OPNSense / core / 3798649 / openvpn: fix php warning

OPNSense/core 3798649 — src/etc/inc/plugins.inc.d openvpn.inc

openvpn: fix php warning

Delta		File
+1	-1	src/etc/inc/plugins.inc.d/openvpn.inc
+1	-1	1 files