Updated mediawiki/extensions
Project: mediawiki/extensions/Math  dfdf55b9cebd33b09da1fa391a88df9d5e6a2ac5

Avoid unnecessary database reads

 Use the cached function isInDatabase rather than readFromDatabase to
 avoid unnecessary read operations on the database.

 Currently, readFromDatabase is usually called only once during instance
 livetime. But after I455b41c8b8d918f4c34f6c115194d227a8394e0a has bben
 merged chances are that it's called twice.

Change-Id: I6434195ad1d323a578a8fdca1b4555e11ab30a15