list-objects-filter-options: fix function name in BUG

Fix the function name we give in the BUG message. It's "config", not
"choice".

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

list-objects-filter-options.c

@@ -35,7 +35,7 @@ const char *list_object_filter_config_name(enum list_objects_filter_choice c)
 		/* not a real filter type; just the count of all filters */
 		break;
 	}
-	BUG("list_object_filter_choice_name: invalid argument '%d'", c);
+	BUG("list_object_filter_config_name: invalid argument '%d'", c);
 }
 
 /*