[evolution-data-server/gnome-42] I#359 - CalDAV: Crash on calendar update

[Milan Crha <mcrha src gnome org>]

commit fe83c96d05e541a4a92b73820f9ce716ab8447a0
Author: Milan Crha <mcrha redhat com>
Date:   Tue May 24 18:27:09 2022 +0200

    I#359 - CalDAV: Crash on calendar update
    
    Closes https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/359

 src/calendar/backends/caldav/e-cal-backend-caldav.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/calendar/backends/caldav/e-cal-backend-caldav.c 
b/src/calendar/backends/caldav/e-cal-backend-caldav.c
index c8aeb8205..2aeed3c91 100644
--- a/src/calendar/backends/caldav/e-cal-backend-caldav.c
+++ b/src/calendar/backends/caldav/e-cal-backend-caldav.c
@@ -545,7 +545,8 @@ ecb_caldav_multiget_from_sets_sync (ECalBackendCalDAV *cbdav,
        link = *in_link;
 
        while (link && left_to_go > 0) {
-               ECalMetaBackendInfo *nfo = link->data;
+               GSList *nfo_link = link;
+               ECalMetaBackendInfo *nfo = nfo_link->data;
 
                link = g_slist_next (link);
                if (!link) {
@@ -635,7 +636,7 @@ ecb_caldav_multiget_from_sets_sync (ECalBackendCalDAV *cbdav,
                                        else
                                                e_cal_meta_backend_info_free (nfo);
 
-                                       link->data = NULL;
+                                       nfo_link->data = NULL;
                                        g_clear_error (&local_error);
                                        continue;
                                } else if (local_error) {