Remove the incl_hdr argument in ssl3_finish_mac() #499

Job	Run time
basic_gcc	6m 0s
check_docs	1m 3s
check_update	1m 16s
check-ansi	2m 51s
address_ub_sanitizer	11m 25s
basic_clang	6m 11s
fuzz_tests	3m 4s
freebsd-x86_64	7m 34s
linux-arm64	1s
minimal	2m 38s
no-deprecated	5m 25s
non-caching	13m 5s
no-shared-macos (macos-13)	11m 45s
no-shared-ubuntu	4m 27s
no-shared-macos (macos-14)	3m 48s
enable_non-default_options	5m 5s
external-tests-misc	8m 40s
external-tests-providers	9m 0s
full_featured	6m 31s
legacy	4m 43s
external-tests-pyca (1.51.0, 3.9)	6m 41s
memory_sanitizer	17m 20s
no-legacy	6m 3s
out-of-readonly-source-and-install-ubuntu	7m 59s
threads_sanitizer	5m 33s
out-of-readonly-source-and-install-macos (macos-13)	15m 29s
out-of-readonly-source-and-install-macos (macos-14)	6m 9s
	2h 59m 46s

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