Updated mediawiki/extensions
Project: mediawiki/extensions/Interwiki  0172c444e3ecb74d9c4e395742c9b5a6bab9acd9

Guard dereference of iwPrefix['iw_trans'] and iwPrefix['iw_local']

Ensure that array indices exist before access to avoid PHP interpreter
undefined index warnings.

Patch also includes trivial whitespace fixes to correct codesniff failures.

Change-Id: I87021a358a85eb3adf7a222fbaee70623dfd8770