Check for wrong line-endings when getting xref #511

Job	Run time
PHPUnit coverage (PHP 7.4)	49s
PHPUnit Composer v2 (PHP 7.4)	36s
Tests alternative autoloader (PHP 7.1)	14s
Tests alternative autoloader (PHP 7.2)	12s
Tests alternative autoloader (PHP 7.3)	11s
Tests alternative autoloader (PHP 7.4)	12s
Tests alternative autoloader (PHP 8.0)	13s
Tests alternative autoloader (PHP 8.1)	16s
Tests alternative autoloader (PHP 8.2)	11s
Tests alternative autoloader (PHP 8.3)	45s
PHPUnit (PHP 7.2)	18s
PHPUnit (PHP 7.3)	35s
PHPUnit (PHP 7.4)	21s
PHPUnit (PHP 8.0)	25s
PHPUnit (PHP 8.1)	18s
PHPUnit (PHP 8.2)	22s
PHPUnit (PHP 8.3)	55s
PHPUnit lowest deps (PHP 7.3)	36s
Windows-Tests with PHP 7.1	55s
Windows-Tests with PHP 7.2	46s
Windows-Tests with PHP 7.3	52s
Windows-Tests with PHP 7.4	53s
Windows-Tests with PHP 8.0	1m 2s
Windows-Tests with PHP 8.1	1m 16s
Windows-Tests with PHP 8.2	48s
Windows-Tests with PHP 8.3	47s
PHPUnit (PHP 7.1)	22s
	15m 10s

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