s390x: fix #1829

Job	Run time
Prepare the run	8s
alpine-linux-x64	0s
linux-x64 / build (debug)	14m 19s
linux-x64 / build (release)	14m 19s
linux-cross-compile / build (aarch64)	14m 17s
linux-x64-hs-minimal / build (debug)	7m 36s
linux-cross-compile / build (arm)	14m 18s
docs / build (debug)	2m 51s
linux-cross-compile / build (s390x)	3m 4s
linux-x64-hs-nopch / build (debug)	14m 19s
linux-cross-compile / build (ppc64le)	14m 18s
linux-x64-hs-optimized / build (debug)	14m 17s
linux-cross-compile / build (riscv64)	14m 15s
linux-x64-hs-zero / build (debug)	12m 6s
linux-x86-hs / build (debug)	14m 16s
linux-x86-hs / build (release)	14m 18s
macos-aarch64 / build (debug)	14m 19s
macos-x64 / build (debug)	14m 20s
windows-aarch64 / build (debug)	14m 11s
macos-aarch64 / build (release)	13m 52s
macos-x64 / build (release)	14m 21s
windows-aarch64 / build (release)	14m 11s
windows-x64 / build (debug)	11m 11s
windows-x64 / build (release)	11m 1s
windows-x64	1s
linux-x64	1s
macos-aarch64	1s
macos-x64	1s
	4h 36m 11s

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