Fix address length on 64 bit archs
Fix address length on 64 bit archs

Currently it's set to 4, which results in stripped addresses for gadgets
from kernel binaries, e.g. for arm64:

0x085bcec0: ldr x8, [x2, #0x250]; mov x0, x2; ldr x8, [x8, #0xc0]; blr x8;

This patch changes the length to 8, which results in:

0xffffff80085bcec0: ldr x8, [x2, #0x250]; mov x0, x2; ldr x8, [x8, #0xc0]; blr x8;

sashs/Ropper,sashs/Ropper