[evolution-ews] Fix possible uninitialized variable usage in ews-test-timezones.c

[Milan Crha <mcrha src gnome org>]

commit 3df7ddc9d7f6dc57bf9cd6e211ccb8d2a343aac9
Author: Milan Crha <mcrha redhat com>
Date:   Mon Dec 12 16:24:50 2016 +0100

    Fix possible uninitialized variable usage in ews-test-timezones.c

 tests/ews-test-timezones.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/tests/ews-test-timezones.c b/tests/ews-test-timezones.c
index 36f680f..1ac64b1 100644
--- a/tests/ews-test-timezones.c
+++ b/tests/ews-test-timezones.c
@@ -146,7 +146,7 @@ test_time_zones_sync (gconstpointer user_data)
        UhmServer *local_server;
        EwsTestData *etd = (gpointer) user_data;
        EwsCalendarConvertData convert_data;
-       EwsFolderId *calendar_fid;
+       EwsFolderId *calendar_fid = NULL;
        gboolean includes_last_folder = FALSE;
        gchar *old_sync_state = NULL;
        gchar **tokens;
@@ -219,6 +219,11 @@ test_time_zones_sync (gconstpointer user_data)
                }
        }
 
+       if (!calendar_fid) {
+               g_printerr ("No calendar folder found\n");
+               goto exit;
+       }
+
        convert_data.connection = etd->connection;
        convert_data.default_zone = icaltimezone_get_utc_timezone ();