Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  b2ddb3b1eb0779c623f5a461ac6e17531e4e8bdf

Fix fallback handling for backwards-compatibility.

MultiDimArray now throws the correct type of exception, instead of
a fatal error :).

Change-Id: I3d85062031219f042f9957ccb83bae84abf1d641