Adjust RRD captive portal graphs for CP zones

- Create RRD configs per zone
- Add tabs to see graphs per zone
- Migrate existing rrd files to default cpZone
- While I'm here, call unset() for $rrdcreate and $rrdupdatesh

Resolves #2655

1 files changed, 1 insertions, 1 deletions

diff --git a/usr/local/www/status_rrd_graph_settings.php b/usr/local/www/status_rrd_graph_settings.php
index 551fccb..6a30cc4 100755
--- a/usr/local/www/status_rrd_graph_settings.php
+++ b/usr/local/www/status_rrd_graph_settings.php
@@ -106,7 +106,7 @@ foreach($databases as $database) {
 	if(stristr($database, "-vpnusers")) {
 		$vpnusers = true;
 	}
-	if(stristr($database, "captiveportal-") && isset($config['captiveportal']['enable'])) {
+	if(stristr($database, "captiveportal-") && is_array($config['captiveportal'])) {
 		$captiveportal = true;
 	}
 }