fixup! Fix DH_check() excessive time with over sized modulus #799

Job	Run time
check_docs	1m 9s
check-ansi	4m 16s
address_ub_sanitizer	14m 10s
basic_clang	7m 10s
basic_gcc	7m 39s
check_update	2m 13s
enable_brotli_and_asan_ubsan	17m 21s
enable_brotli_and_zstd_dynamic	7m 39s
enable_brotli_dynamic	7m 16s
enable_non-default_options	8m 2s
enable_zstd_and_asan_ubsan	12m 57s
enable_zstd_dynamic	8m 28s
fips_and_ktls	7m 41s
memory_sanitizer	19m 6s
minimal	3m 29s
no-deprecated	7m 4s
non-caching	17m 29s
no-shared (ubuntu-latest)	6m 29s
no-shared (macos-latest)	8m 25s
threads_sanitizer	6m 57s
buildtest	11m 26s
enable-tfo (ubuntu-latest)	7m 5s
enable-tfo (macos-latest)	10m 36s
external-test-cf-quiche	5m 54s
external-test-pyca (1.51.0, 3.9)	8m 38s
external-tests	17m 25s
legacy	7m 9s
no-legacy	8m 57s
out-of-source-and-install (ubuntu-latest)	9m 52s
out-of-source-and-install (macos-latest)	16m 20s
	4h 38m 22s

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