Time to crack sometimes wrong in v1.9.0

[StellarSand]

When using v1.9.0 of this library, time to crack calculations are wrong, sometimes giving 0 months/years.
Issue is not present in v1.8.2 & earlier.

For now I've found mainly 2 passwords that are able to reproduce this issue: jdfhasfqwui1 & hsdsjlll, but there's definitely more (check Some more passwords at the end).

Here's a sample code with results:

Sample code

import com.nulabinc.zxcvbn.Zxcvbn

fun main() {
    val zxcvbn = Zxcvbn()
    val strength = zxcvbn.measure("jdfhasfqwui1")
    val crackTimesDisplay = strength.crackTimesDisplay
    println("10B/sec (offline fast): ${crackTimesDisplay.offlineFastHashing1e10PerSecond}")
    println("10K/sec (offline slow): ${crackTimesDisplay.offlineSlowHashing1e4perSecond}")
    println("10/sec (online fast): ${crackTimesDisplay.onlineNoThrottling10perSecond}")
    println("100/hour (online slow): ${crackTimesDisplay.onlineThrottling100perHour}")
}

Results

Password	v1.9.0	v1.8.2
jdfhasfqwui1
hsdsjlll

Some more passwords

• Modify jdfhasfqwui1 a bit to get:
  • jdfhasfewui5
  • fdfhadfewui7
  • ydfhcxfewup9
  • 1lmhcxf5wuo9

All of the above give the same 10K/sec (offline slow): 0 years as jdfhasfqwui1 with v1.9.0

• Similarly modify hsdsjlll a bit to get:
  • ut3sljjj
  • abc9ppp
  • jr9rg555
  • down3tlkkk

down3tlkkk gives 10/sec (online fast): 0 months with v1.9.0.
The rest of them gives the same 100/hour (online slow): 0 years as hsdsjlll with v1.9.0