Fix debugging in sqlite driver

program/include/rcube_db.php

@@ -251,6 +251,18 @@ class rcube_db
         $this->options['debug_mode'] = $dbg;
     }
 
+    /**
+     * Writes debug information/query to 'sql' log file
+     *
+     * @param string $query SQL query
+     */
+    protected function debug($query)
+    {
+        if ($this->options['debug_mode']) {
+            rcube::write_log('sql', '[' . (++$this->db_index) . '] ' . $query . ';');
+        }
+    }
+
     /**
      * Getter for error state
      *
@@ -378,9 +390,7 @@ class rcube_db
 
         $query = rtrim($query, ';');
 
-        if ($this->options['debug_mode']) {
-            rcube::write_log('sql', '[' . (++$this->db_index) . '] ' . $query . ';');
-        }
+        $this->debug($query);
 
         $query = $this->dbh->query($query);
 

program/include/rcube_db_sqlite.php

@@ -63,9 +63,7 @@ class rcube_db_sqlite extends rcube_db
             $data = file_get_contents(INSTALL_PATH . 'SQL/sqlite.initial.sql');
 
             if (strlen($data)) {
-                if ($this->options['debug_mode']) {
-                    $this::debug('INITIALIZE DATABASE');
-                }
+                $this->debug('INITIALIZE DATABASE');
 
                 $q = $dbh->exec($data);