Wrong indentation in Panels exports

Panels exports include extra indentation where it doesn't match Drupal coding standards. For example:

  $display->panels = array();
    $pane = new stdClass();
    $pane->pid = 'new-36405db8-54c5-495c-ba8a-0a5f7ade185a';

Notice how $display is prefixed with 2 spaces, but $pane is prefixed with 4 spaces. There is no reason for the additional indentation!

This creates problems with using Features to export Panels pages (or Panelizer defaults or Mini-panels) and tools to automatically test coding standards - it generates lots of false positives.

I'll attach a patch to fix in a moment.