Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  8b7cfd12d558809b3d035f15745ec3eb6b0c4f0e

Handle window.localStorage === null case correctly.

Change-Id: I49ddf45093daee4988fb7f3b481fb35bfaceb152
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/521
Bug: 64525