Cannot call set_control_data(init=0) twice

[chiplet]

This line throws a KeyError on the second call since DictData has already been initialized (is no longer None) and we don't give a name argument on the `set_control_data(init=0) call.

rtl/rtl/rtl_iofile.py

Line 298 in d06fd32

self.DictData[time][self.connector_datamap(name=name)-1] = val

Instead of terminating the whole program with a cryptic index error this should be fixed to silently ignore the duplicate function call.