[bug #62398] .../troff/input.cpp: argument "len" is zero in "new unsigned char[len]"

[Dave]

Follow-up Comment #8, bug #62398 (project groff):

In the original code, I also wonder--since the "new" isn't protected by a "len
> 0" check--why the memcpy is.  Surely a memcpy() on a zero-length string is
effectively a no-op.


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