lib/compact: replace deprecated notmuch_database_open_verbose

It should not be necesary to have any config information here, hence
passing "" to n_d_open_with_config.

lib/database.cc

@@ -590,8 +590,10 @@ notmuch_database_compact (const char *path,
     notmuch_database_t *notmuch = NULL;
     char *message = NULL;
 
-    ret = notmuch_database_open_verbose (path,
+    ret = notmuch_database_open_with_config (path,
 					     NOTMUCH_DATABASE_MODE_READ_WRITE,
+					     "",
+					     NULL,
 					     &notmuch,
 					     &message);
     if (ret) {