Fix build with Cl and C++20 #1256

Job	Run time
[conda:ubuntu-latest:Release:c++17]	21m 37s
[conda:ubuntu-latest:Release:c++20]	22m 6s
[conda:macos-latest:Release:c++17]	4m 32s
[conda:macos-latest:Release:c++20]	4m 18s
[conda:windows-2019:Release:c++17]	24m 46s
[conda:windows-2019:Release:c++20]	27m 57s
[conda:windows-latest:Release:c++17]	30m 34s
[conda:windows-latest:Release:c++20]	29m 22s
[conda:macos-14:Release:c++17]	5m 14s
[conda:macos-14:Release:c++20]	5m 47s
[conda:ubuntu-latest:Debug:c++17]	30m 30s
[conda:ubuntu-latest:Debug:c++20]	31m 3s
[conda:windows-2019:Debug:c++17]	41m 3s
[conda:windows-2019:Debug:c++20]	42m 38s
[conda:windows-latest:Debug:c++17]	43m 39s
[conda:windows-latest:Debug:c++20]	44m 45s
[conda:macos-14:Debug:c++17]	4m 27s
[conda:macos-14:Debug:c++20]	4m 52s
[conda:macos-latest:Debug:c++17]	4m 0s
[conda:macos-latest:Debug:c++20]	5m 21s
check-ci-linux-osx-win-conda	2s
	7h 8m 33s

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