"non-fixnum found in flvector" => "non-flonum found in flvector" #325

Job	Run time
ci (tpb, ubuntu-22.04, --pb --threads --enable-libffi, test-some-fast)	29m 52s
ci (a6osx, macos-12)	19m 18s
ci (ta6osx, macos-12)	22m 28s
ci (arm64osx, macos-14)	9m 11s
ci (tarm64osx, macos-14)	11m 26s
ci (i3le, ubuntu-22.04)	11m 19s
ci (ti3le, ubuntu-22.04)	14m 35s
ci (a6le, ubuntu-22.04)	9m 2s
ci (ta6le, ubuntu-22.04, CFLAGS+=-std=gnu89)	12m 1s
ci (ta6le, ubuntu-22.04, reboot, -m=ta6le --force, re.boot SCHEME="chezscheme", test-some-fast)	8m 26s
ci (i3nt, windows-2022, vs)	11m 38s
ci (ti3nt, windows-2022, vs)	14m 51s
ci (a6nt, windows-2022, vs)	11m 53s
ci (ta6nt, windows-2022, vs)	15m 2s
ci (ta6nt, windows-2022, gcc, CFLAGS+=-std=gnu89)	13m 25s
	3h 34m 27s

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