[evolution-data-server/gnome-3-22] Bug 774304 - Cover relative path in /etc/localtime symlink

[Milan Crha <mcrha src gnome org>]

commit 6aa5bfca4cf1a61435ba9a540827094be6bc765e
Author: Milan Crha <mcrha redhat com>
Date:   Mon Jan 9 19:35:03 2017 +0100

    Bug 774304 - Cover relative path in /etc/localtime symlink

 calendar/libecal/e-cal-system-timezone.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/calendar/libecal/e-cal-system-timezone.c b/calendar/libecal/e-cal-system-timezone.c
index 81adee3..022571c 100644
--- a/calendar/libecal/e-cal-system-timezone.c
+++ b/calendar/libecal/e-cal-system-timezone.c
@@ -43,6 +43,10 @@ system_timezone_strip_path_if_valid (const gchar *filename)
 {
        gint skip;
 
+       /* In case it's a relative path the '../' references the root (from the /etc) */
+       if (filename && g_str_has_prefix (filename, "../"))
+               filename += 2;
+
        if (!filename || !g_str_has_prefix (filename, SYSTEM_ZONEINFODIR "/"))
                return NULL;