Fix php highlighter broken in r4399.  `isinstance(stream, list)` was letting the line-generator pass through and assuming it was Genshi events.
Fix php highlighter broken in r4399.  `isinstance(stream, list)` was letting the line-generator pass through and assuming it was Genshi events.

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac