Fix returning empty text in some cases #583

Job	Run time
PHPUnit Composer v2 (PHP 7.4)	38s
PHPUnit (PHP 7.2)	41s
Tests alternative autoloader (PHP 7.1)	11s
PHPUnit (PHP 7.3)	29s
PHPUnit coverage (PHP 7.4)	58s
Tests alternative autoloader (PHP 7.2)	11s
PHPUnit (PHP 7.1)	35s
PHPUnit (PHP 7.4)	37s
Tests alternative autoloader (PHP 7.3)	6s
PHPUnit (PHP 8.0)	40s
PHPUnit lowest deps (PHP 7.3)	33s
Tests alternative autoloader (PHP 7.4)	6s
PHPUnit (PHP 8.1)	31s
Windows-Tests with PHP 7.1	1m 13s
PHPUnit (PHP 8.2)	28s
Windows-Tests with PHP 7.2	54s
Tests alternative autoloader (PHP 8.0)	9s
PHPUnit (PHP 8.3)	43s
Windows-Tests with PHP 7.3	1m 4s
Tests alternative autoloader (PHP 8.1)	16s
Windows-Tests with PHP 7.4	54s
Tests alternative autoloader (PHP 8.2)	6s
Windows-Tests with PHP 8.0	59s
Windows-Tests with PHP 8.1	1m 0s
Tests alternative autoloader (PHP 8.3)	10s
Windows-Tests with PHP 8.2	57s
Windows-Tests with PHP 8.3	1m 2s
	16m 11s

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