MNT Add extension in finally block #591

Job	Run time
ci / Context	1s
ci / Generate matrix	26s
ci / Check governance	0s
ci / 8.1 prf-low mysql57 phpunit all	2m 41s
ci / 8.2 mariadb phpunit all	2m 29s
ci / 8.3 mysql80 phpunit all	2m 34s
ci / 8.1 mysql57 phplinting	2m 11s
ci / 8.1 mysql57 endtoend root job1	5m 23s
ci / 8.3 mysql80 endtoend root job1	5m 35s
ci / 8.1 mysql57 endtoend root job2	6m 29s
ci / 8.3 mysql80 endtoend root job2	6m 17s
ci / 8.1 mysql57 js	4m 45s
ci / 8.1 mysql57 doclinting	2m 18s
ci / Dispatch tag patch release	0s
	41m 9s

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