[evolution] Calendar: Let a GSettings binding mapping function return always TRUE

[Milan Crha <mcrha src gnome org>]

commit 57c061344db9346c582fd1077dd9517cf0c6a3fc
Author: Milan Crha <mcrha redhat com>
Date:   Fri May 7 09:13:16 2021 +0200

    Calendar: Let a GSettings binding mapping function return always TRUE
    
    Not doing so aborts the application, which is not intended here.

 src/modules/calendar/e-cal-base-shell-sidebar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/modules/calendar/e-cal-base-shell-sidebar.c b/src/modules/calendar/e-cal-base-shell-sidebar.c
index 0ddc5112d4..978e8c540d 100644
--- a/src/modules/calendar/e-cal-base-shell-sidebar.c
+++ b/src/modules/calendar/e-cal-base-shell-sidebar.c
@@ -74,7 +74,7 @@ cal_base_shell_sidebar_map_uid_to_source (GValue *value,
                source = e_source_registry_ref_default_calendar (registry);
        g_value_take_object (value, source);
 
-       return (source != NULL);
+       return TRUE;
 }
 
 static GVariant *