Is this Hunk #1 important? Should I reinstall MW or just ignore the error and patch it?
# patch -p1 --dry-run < mediawiki-1.26.4.patch
patching file RELEASE-NOTES-1.26
Hunk #1 FAILED at 1.
Hunk #2 succeeded at 14 (offset -19 lines).
1 out of 2 hunks FAILED -- saving rejects to file RELEASE-NOTES-1.26.rej
patching file includes/Block.php
patching file includes/DefaultSettings.php
Hunk #1 FAILED at 75.
1 out of 2 hunks FAILED -- saving rejects to file includes/DefaultSettings.php.rej
patching file includes/GlobalFunctions.php
patching file includes/Html.php
patching file includes/HttpFunctions.php
patching file includes/OutputPage.php
patching file includes/Title.php
patching file includes/User.php
patching file includes/api/ApiParse.php
patching file includes/diff/DairikiDiff.php
patching file includes/filerepo/file/LocalFile.php
patching file includes/parser/Parser.php
patching file tests/parser/parserTest.inc
patching file tests/parser/parserTests.txt
patching file tests/phpunit/includes/HtmlTest.php
patching file tests/phpunit/includes/LinkerTest.php
patching file tests/phpunit/includes/OutputPageTest.php
patching file tests/phpunit/includes/XmlSelectTest.php
patching file tests/phpunit/includes/XmlTest.php
patching file tests/phpunit/includes/content/JsonContentTest.php
patching file tests/phpunit/includes/parser/NewParserTest.php