Theme calls cannot be overridden

The block generation contains direct calls to theme_ functions. This prevents them being overridden by theme developers.

Index: modules/avatar_blocks/avatar_blocks.module
===================================================================
--- modules/avatar_blocks/avatar_blocks.module	(revision 9516)
+++ modules/avatar_blocks/avatar_blocks.module	(working copy)
@@ -319,7 +319,7 @@
     while ($next_member = db_fetch_object($display_users)) {
       $online_members[] = $next_member;
     }
-  $output = theme_avatar_blocks_block($online_members, $imagecache_preset);
+  $output = theme('avatar_blocks_block', $online_members, $imagecache_preset);
   }
   if (variable_get('avatar_blocks_ol_include_text', 0)) {
     // Format the output with proper grammar.
@@ -356,7 +356,7 @@
   while ($next_member = db_fetch_object($new_member_list)) {
     $new_members[] = $next_member;
   }
-  $output = theme_avatar_blocks_block($new_members, $imagecache_preset);
+  $output = theme('avatar_blocks_block', $new_members, $imagecache_preset);
   return $output;
 }
 
@@ -388,7 +388,7 @@
       while ($next_buddy = db_fetch_object($my_buddylist_list)) {
         $buddies[] = $next_buddy;
       }
-      $output = theme_avatar_blocks_block($buddies, $imagecache_preset);
+      $output = theme('avatar_blocks_block', $buddies, $imagecache_preset);
     }
   }
   return $output;