In standards such as LoPAPR, property names in excess of the usual 31 characters exist.
This breaks property traversal.
While in IEEE 1275-1994, nextprop is defined explicitly to work with a 32-byte region of memory, using a larger buffer should be fine. There is actually no way to pass a buffer length to the nextprop call in the OF client interface, so SLOF actually just blindly overflows the buffer.
So we have to defensively make the buffer larger.