prevent panic when compiling aarch64 vectorcall functions #1816

Job	Run time
minimal	18s
msrv	1m 35s
check-cfg	21s
docs	31s
quickchecking	19s
rustfmt-clippy	33s
test (ubuntu-latest, 5.0, 1, 0, 0, 0, 0)	2m 13s
test-book	11s
test (ubuntu-latest, 5.0, 1, 0, 0, 1, 0)	1m 59s
test-expectations (ubuntu-latest)	1m 5s
test (ubuntu-latest, 5.0, 1, 0, 1, 0, 0)	2m 0s
test-expectations (macos-latest)	2m 40s
test (ubuntu-latest, 5.0, 1, 0, 1, 1, 0)	1m 57s
test (ubuntu-latest, 5.0, 1, 1, 0, 0, 0)	2m 28s
test (ubuntu-latest, 5.0, 1, 1, 0, 1, 0)	2m 17s
test (ubuntu-latest, 5.0, 1, 1, 1, 0, 0)	2m 20s
test (ubuntu-latest, 5.0, 1, 1, 1, 1, 0)	2m 22s
test (ubuntu-latest, 9.0, 1, 0, 0, 0, 0)	2m 7s
test (ubuntu-latest, 9.0, 1, 0, 0, 1, 0)	2m 24s
test (ubuntu-latest, 9.0, 1, 0, 1, 0, 0)	2m 7s
test (ubuntu-latest, 9.0, 1, 0, 1, 1, 0)	2m 7s
test (ubuntu-latest, 9.0, 1, 1, 0, 0, 0)	2m 36s
test (ubuntu-latest, 9.0, 1, 1, 0, 1, 0)	2m 55s
test (ubuntu-latest, 9.0, 1, 1, 1, 0, 0)	2m 42s
test (ubuntu-latest, 9.0, 1, 1, 1, 1, 0)	2m 33s
test (ubuntu-latest, 9.0, 0, 0, 1)	1m 17s
test (macos-latest, 9.0, 0, 0, 0)	1m 52s
	47m 49s

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