code cleanup #3312

Job	Run time
ci_test_compilers_clang (3.8)	16m 31s
ci_test_compilers_clang (3.9)	17m 4s
ci_test_compilers_clang (4)	15m 55s
ci_test_compilers_clang2 (13)	12m 0s
ci_test_compilers_gcc (8)	11m 56s
ci_test_compilers_clang2 (15-bullseye)	11m 54s
ci_test_compilers_clang (5)	15m 38s
ci_test_compilers_gcc (9)	12m 2s
ci_test_compilers_clang (6)	16m 3s
ci_test_compilers_gcc (10)	13m 1s
ci_test_compilers_clang (7)	17m 54s
ci_test_compilers_gcc (11)	13m 34s
ci_test_compilers_gcc2 (12)	17m 30s
ci_test_compilers_clang (8)	18m 19s
clang_14_build	41m 59s
ci_test_compilers_gcc (12)	13m 52s
ci_test_compilers_gcc2 (latest)	19m 24s
ci_test_compilers_clang (9)	20m 13s
ci_test_compilers_gcc (latest)	13m 56s
ci_test_compilers_clang (10)	20m 35s
gcc_build	11m 34s
ci_test_compilers_clang (11)	21m 35s
gcc_build_no_deprecated	11m 50s
ci_test_compilers_clang (12)	22m 9s
gcc_build11b	1h 10m 11s
ci_test_compilers_clang (13)	19m 0s
gcc_build12	15m 22s
github_20 (g++-12, Debug)	25m 14s
ci_test_compilers_clang (14)	18m 54s
github_20 (g++-12, Release)	25m 16s
ci_test_compilers_clang (15-bullseye)	18m 0s
	9h 58m 25s

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