Fix compiler bug that allows an unsafe data access pattern #2605

Job	Run time
Validate GNU Docker image builds	1m 3s
Lint bash, docker, markdown, and yaml	1m 43s
Validate Windows Docker image builds	2m 33s
Validate musl Docker image builds	28s
Validate GNU Docker release image builds	58s
Validate musl Docker release image builds	33s
Validate Windows Docker release image builds	2m 23s
Verify CHANGELOG is valid	7s
x86-64 Linux glibc	32m 2s
aarch64 Linux glibc	27m 48s
x86-64 Linux musl	27m 19s
armhf Linux glibc	42m 36s
arm Linux glibc	34m 43s
riscv64 Linux glibc	24m 36s
x86-64 Apple Darwin	26m 0s
x86-64 Windows MSVC	49m 38s
use dtrace	31m 48s
use pool_memalign	31m 25s
	5h 37m 43s

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