ipsec: fix crash reports

(cherry picked from commit 504c0762)

src/www/widgets/widgets/ipsec.widget.php

@@ -72,11 +72,18 @@ if (isset($config['ipsec']['phase1'])) {
     }
 
     $ipsec_leases = json_decode(configd_run("ipsec list leases"), true);
+    if ($ipsec_leases == null) {
+        $ipsec_leases = array();
+    }
 
-    // parse configured tunnels
     $ipsec_status = json_decode(configd_run("ipsec list status"), true);
+    if ($ipsec_status == null) {
+        $ipsec_status = array();
+    }
+
+    // parse configured tunnels
     $activetunnels = 0;
-    if ($ipsec_status != null) {
+
     foreach ($ipsec_status as $status_key => $status_value) {
         if (isset($status_value['children'])) {
           foreach($status_value['children'] as $child_status_key => $child_status_value) {
@@ -95,7 +102,6 @@ if (isset($config['ipsec']['phase1'])) {
             }
         }
     }
-    }
 }
 
 if (isset($config['ipsec']['phase2'])) {