test

Fix portability of IMMER_THROW when exceptions are disabled #332

Job	Run time
docs	1m 41s
build-spm	43s
build	1m 2s
check (Debug, gnu-6, 14)	8m 22s
check (Debug, gnu-7, 14)	8m 38s
check (Debug, llvm-5, 14)	6m 54s
check (Debug, llvm-6, 14)	6m 41s
check (Release, gnu-6, 14)	10m 35s
check (Release, gnu-7, 14)	10m 56s
check (Release, llvm-5, 14)	11m 31s
check (Release, llvm-6, 14)	12m 30s
check (Debug, gnu-9, 14, coverage)	10m 49s
check (Debug, gnu-8, 17)	8m 38s
check (Debug, llvm-9, 17, fuzzers)	8m 46s
check (Debug, gnu-11, 20)	9m 23s
check (Debug, llvm-13, 20)	7m 9s
check (Debug, llvm-8, 14, sanitize)	11m 4s
check (Release, gnu-9, 14, benchmark)	27m 19s
check (Release, llvm-10, 14, benchmark)	27m 43s
	3h 10m 24s

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