fix tests for ReadableNodeIDAllocator. #16

Job	Run time
lint	25s
Windows 32-bit	8m 9s
macOS universal	12m 37s
Linux focal gcc7	1m 56s
Windows 64-bit	8m 35s
macOS x64 legacy	7m 58s
Linux focal gcc9 shared libscsynth	1m 28s
Windows 64-bit MinGW	8m 45s
macOS x64 use system libraries	3m 17s
Linux jammy gcc10 use system libraries	2m 55s
macOS x64 shared libscsynth	2m 47s
Linux jammy gcc11	1m 25s
Linux jammy gcc12	1m 35s
Linux focal clang7	1m 42s
Linux focal clang11	1m 44s
Linux focal clang12	1m 37s
Linux jammy clang13	2m 7s
Linux jammy clang14	1m 46s
deploy ${{ matrix.artifact-suffix }} to s3	0s
deploy release	0s
test on ${{ matrix.name }}	0s
	1h 10m 48s

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