Fix warning with invalid time zone

The SQL query retrieving the time zone from the database may return an
empty result set if the session timeout was reached. Handle such cases
gracefully by leaving the timezone variable unset.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/web/lib/timezone.inc.php b/web/lib/timezone.inc.php
index 9fb24331..949f846d 100644
--- a/web/lib/timezone.inc.php
+++ b/web/lib/timezone.inc.php
@@ -42,6 +42,9 @@ function set_tz() {
 
 		if ($result) {
 			$timezone = $result->fetchColumn(0);
+			if (!$timezone) {
+				unset($timezone);
+			}
 		}
 
 		$update_cookie = true;