How to avoid NPN leakage current turning on a PNP darlington has high level switch for automotive electrics
You don't need to add anything. The TIP125 already has fairly low-value resistors in there: 



Note that the actual leakage current (2mA maximum at 25°C with zero base current- Iceo) is pretty loosely specified. I would expect it to be more like 200nA typically (10,000 times less than the maximum guaranteed). 

To figure out if this is okay (rather than just eye-balling it like I did!), consider say 0.5V across R1 (not quite turning on), which would require a current of 63uA before it would begin to turn on the input transistor. Looking at the 2N3904 datasheet, the guaranteed maximum leakage from the 2N3904 is 50nA at 25°C. Rule of thumb is that this doubles every 10°C, but even so, even at 105°C we should have less than 13uA of leakage current, which is about 1/5 of the current required to begin worrying.