strange errors on mpc85xx-p1010-tplink_tl-wdr4900-v1

[Bastian Bittorf]

I build r21997 for the wdr4900, flashed with
'sysupgrade -n /tmp/factory.bin' and recognized strange
errors with custom scripts. It can be reduced to:

$ test A -gt 5 && echo OK
ash: A: out of range
OK

I will try to run busybox-1.36.0 with QEMU
for investigating further...

bye, Bastian