Fix divide by zero bug in lib/rateio package when speed percent is 0.
Fix divide by zero bug in lib/rateio package when speed percent is 0.

keep94/Dominator,Symantec/Dominator,keep94/Dominator,Symantec/Dominator,keep94/Dominator,Symantec/Dominator,rgooch/Dominator,rgooch/Dominator,rgooch/Dominator