Another failure against our Travis on master after T104092.
https://travis-ci.org/SemanticMediaWiki/SemanticExtraSpecialProperties/jobs/71433607
```
echo 'putenv( '\''MW_INSTALL_PATH=/home/travis/build/SemanticMediaWiki/mw'\'' );'
+php maintenance/update.php --quick
PHP Fatal error: Call to undefined function MediaWiki\suppressWarnings() in /home/travis/build/SemanticMediaWiki/mw/maintenance/Maintenance.php on line 960
PHP Stack trace:
PHP 1. {main}() /home/travis/build/SemanticMediaWiki/mw/maintenance/update.php:0
PHP 2. require_once() /home/travis/build/SemanticMediaWiki/mw/maintenance/update.php:214
PHP 3. Maintenance->finalSetup() /home/travis/build/SemanticMediaWiki/mw/maintenance/doMaintenance.php:95
Fatal error: Call to undefined function MediaWiki\suppressWarnings() in /home/travis/build/SemanticMediaWiki/mw/maintenance/Maintenance.php on line 960
Call Stack:
0.0006 291112 1. {main}() /home/travis/build/SemanticMediaWiki/mw/maintenance/update.php:0
0.0029 680256 2. require_once('/home/travis/build/SemanticMediaWiki/mw/maintenance/doMaintenance.php') /home/travis/build/SemanticMediaWiki/mw/maintenance/update.php:214
0.0430 6136928 3. Maintenance->finalSetup() /home/travis/build/SemanticMediaWiki/mw/maintenance/doMaintenance.php:95
```
Travis works on MW 1.24 and MW 1.25.