[ticket/17034] Fix min posts rank validation

PHPBB-17034

Author: battye

phpBB/adm/style/acp_ranks.html

@@ -44,7 +44,7 @@ <h1>{L_ACP_MANAGE_RANKS}</h1>
 	<div id="posts"<!-- IF S_SPECIAL_RANK --> style="display: none;"<!-- ENDIF -->>
 	<dl>
 		<dt><label for="min_posts">{L_RANK_MINIMUM}{L_COLON}</label></dt>
-		<dd><input name="min_posts" type="number" id="min_posts" min="0" max="9999999999" value="{MIN_POSTS}" /></dd>
+		<dd><input name="min_posts" type="number" id="min_posts" min="0" max="16777215" value="{MIN_POSTS}" /></dd>
 	</dl>
 	</div>