[gccsdk] beebasm build with GCCSDK won't run in as RISC OS 4.39 !Make task but will run in a task window.

I know this is completely indefensible, unnecessary and obtuse use case.  I don't for one moment think it needs fixing, I post it here just as an observation of a peculiar behavior.

This will run perfectly in a task window but as a !Make_task it hangs.  (!Make 1.27)

beebasm -I @.hostfs/txt -o @.hostfs/rom

Alan