Fix dbfixup.py for incomplete databases
Fix dbfixup.py for incomplete databases

Signed-off-by: Clifford Wolf <b28e7ff75903c06de987a1eb75ea100a79c89e3a@clifford.at>

SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray