more clang fixes #83

Job	Run time
ubuntu-latest\|Debug\|CC=gcc CXX=g++	1m 26s
ubuntu-latest\|Debug\|CC=gcc CXX=g++	1m 32s
ubuntu-latest\|Debug\|CC=clang CXX=clang++	1m 25s
ubuntu-latest\|Debug\|CC=clang CXX=clang++	1m 41s
ubuntu-latest\|Release\|CC=gcc CXX=g++	1m 25s
ubuntu-latest\|Release\|CC=gcc CXX=g++	1m 40s
ubuntu-latest\|Release\|CC=clang CXX=clang++	1m 25s
ubuntu-latest\|Release\|CC=clang CXX=clang++	1m 31s
macos-latest\|Debug\|CC=gcc CXX=g++	1m 9s
macos-latest\|Debug\|CC=gcc CXX=g++	1m 35s
macos-latest\|Debug\|CC=clang CXX=clang++	1m 13s
macos-latest\|Debug\|CC=clang CXX=clang++	1m 24s
macos-latest\|Release\|CC=gcc CXX=g++	1m 15s
macos-latest\|Release\|CC=gcc CXX=g++	1m 29s
macos-latest\|Release\|CC=clang CXX=clang++	1m 15s
macos-latest\|Release\|CC=clang CXX=clang++	1m 26s
	22m 51s

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