lib-dict: Don't crash if init_legacy() isn't supported by dict driver

diff --git a/src/lib-dict/dict.c b/src/lib-dict/dict.c
index fde113981384ddacaf6b8f88fb167b15b0c1c061..99e2e8e00d3b27d203e2ba420302217c3ee00773 100644 (file)
--- a/src/lib-dict/dict.c
+++ b/src/lib-dict/dict.c
@@ -129,6 +129,11 @@ int dict_init_legacy(const char *uri, const struct dict_legacy_settings *set,
                *error_r = t_strdup_printf("Unknown dict module: %s", name);
                return -1;
        }
+       if (dict->v.init_legacy == NULL) {
+               *error_r = t_strdup_printf(
+                       "dict %s doesn't support legacy_init()", name);
+               return -1;
+       }
        struct event *event = event_create(set->event_parent);
        event_add_category(event, &event_category_dict);
        event_add_str(event, "driver", dict->name);