Small code cleanup by Falk Doering:

- PHP6 forward compatibility on accessing strings
- Better indenting, other cleanups on the plugin API file

include/db/sqlite.inc.php

@@ -149,7 +149,7 @@ function serendipity_db_sqlite_fetch_array($res, $type = SQLITE_BOTH)
     }
 
     /* strip any slashes, correct fieldname */
-    foreach ($row as $i => $v) {
+    foreach ($row AS $i => $v) {
         // TODO: If a query of the format 'SELECT a.id, b.text FROM table' is used,
         //       the sqlite extension will give us key indizes 'a.id' and 'b.text'
         //       instead of just 'id' and 'text' like in mysql/postgresql extension.
@@ -339,7 +339,7 @@ function serendipity_db_schema_import($query)
     }
 
     $query = trim(str_replace($search, $replace, $query));
-    if ($query{0} == '@') {
+    if ($query[0] == '@') {
         // Errors are expected to happen (like duplicate index creation)
         return serendipity_db_query(substr($query, 1), false, 'both', false, false, false, true);
     } else {