Fix mismatched pushd/popd on ppc64le and s390x
    
    Executing(%check): /bin/sh -e /var/tmp/rpm-tmp.HyvLyX
    + umask 022
    + cd /builddir/build/BUILD
    + cd qemu-6.0.0
    + b=./x86_64-softmmu/qemu-system-x86_64
    + '[' -x ./x86_64-softmmu/qemu-system-x86_64 ']'
    + popd
    /var/tmp/rpm-tmp.HyvLyX: line 46: popd: directory stack empty
    error: Bad exit status from /var/tmp/rpm-tmp.HyvLyX (%check)