Updated mediawiki/extensions
Project: mediawiki/extensions/Parsoid  5e47baf89dcf34d9dd5e4c979b5f311dfa56c902

Be more consistent with errors in TemplateRequest.

If the 'error' parameter for the callback is non-null, ensure that the
src parameter is null.

Change-Id: I5b9105ebbf77d6a2030e955e9df46e33f6571814