prog: fix size assignment for squashed args

We can have a situation where len target points
into a squashed argument. In suca case we don't have the target argument.
In such case we simply leave size argument as is. It can't happen during generation,
only during mutation and mutation can set size to random values, so it should be fine.
This is a lateny bug, we just never had such case before.

0 files changed, 0 insertions, 0 deletions