Correctly cast strlen() for %*s width argument.
Correctly cast strlen() for %*s width argument.

We had fixed many of these warning before, but I missed this
one since this file was not part of the distribution when we
fixed the other cases.

themperek/iverilog,themperek/iverilog,CastMi/iverilog,CastMi/iverilog,CastMi/iverilog,themperek/iverilog