Updated mediawiki/extensions
Project: mediawiki/extensions/ContentTranslation  cec55271b4bab012afe3f5cdef475a9263630753

Fix handling of empty resource in image adaption

Example: Math formula in page,
Special:ContentTranslation&page=Population_growth&from=en&to=gu

Change-Id: Ief22a0d5c412dd54e801f1bb03977823af89ade3