Declaration of helper_plugin_sqlite_adapter_null::opendb() must be compatible with helper_plugin_sqlite_adapter::opendb($init, $sqliteupgrade = false)
Merge pull request #25 from sim6/fix-adapter_null-opendb

Declaration of helper_plugin_sqlite_adapter_null::opendb() must be compatible with helper_plugin_sqlite_adapter::opendb($init, $sqliteupgrade = false)