Update pdo.php

Replace dbissecure with db_secure variable as this approach is more concise.

resources/pdo.php

@@ -246,15 +246,12 @@ if ($db_type == "mysql") {
 if ($db_type == "pgsql") {
 	//database connection
 	try {
-		if (isset($db_secure)) {
-			$dbissecure = $db_secure;
-		}
-		else {
-			$dbissecure = false;
+		if (!isset($db_secure)) {
+			$db_secure = false;
 		}
 		if (strlen($db_host) > 0) {
 			if (strlen($db_port) == 0) { $db_port = "5432"; }
-			if ($dbissecure == true) {
+			if ($db_secure == true) {
 				$db = new PDO("pgsql:host=$db_host port=$db_port dbname=$db_name user=$db_username password=$db_password sslmode=verify-ca sslrootcert=$db_cert_authority");
 			}
 			else {