plugins: Use integer config API with interval specification where sensible

Many of these fall into a few categories:
- util.cache size, must be >= 1
- byte or item counts that logically can't be negative
- port numbers that should be in 1..0xffff

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/mod_storage_internal.lua b/plugins/mod_storage_internal.lua
index 0d3f2da6..fdc91352 100644
--- a/plugins/mod_storage_internal.lua
+++ b/plugins/mod_storage_internal.lua
@@ -11,7 +11,7 @@ local it = require "prosody.util.iterators";
 
 local host = module.host;
 
-local archive_item_limit = module:get_option_number("storage_archive_item_limit", 10000);
+local archive_item_limit = module:get_option_integer("storage_archive_item_limit", 10000, 0);
 local archive_item_count_cache = cache.new(module:get_option("storage_archive_item_limit_cache_size", 1000));
 
 local use_shift = module:get_option_boolean("storage_archive_experimental_fast_delete", false);