Distance Limit does not check if it in range

[RedTeaDev]

panic: runtime error: index out of range [-1]

goroutine 16 [running]:
github.com/dertseha/everoute/travel/search.(*routeChromosomeSplicer).random(0xc000099680, {0xb388a8, 0x0, 0x30?}, 0x0)
        /home/redtea/go/src/github.com/dertseha/everoute/travel/search/RouteChromosomeSplicer.go:17 +0x225
github.com/dertseha/everoute/travel/search.(*routeFinder).ensurePopulationSize(0xc000104a00, {0xc001c7e1b0?, 0x0?, 0x0?})
        /home/redtea/go/src/github.com/dertseha/everoute/travel/search/RouteFinder.go:87 +0x7f
github.com/dertseha/everoute/travel/search.(*routeFinder).IncubatorEmpty.func1()
        /home/redtea/go/src/github.com/dertseha/everoute/travel/search/RouteFinder.go:70 +0x14c
github.com/dertseha/everoute/util.SingleThreadExecutor.func1()
        /home/redtea/go/src/github.com/dertseha/everoute/util/SingleThreadExecutor.go:19 +0x3d
created by github.com/dertseha/everoute/util.SingleThreadExecutor
        /home/redtea/go/src/github.com/dertseha/everoute/util/SingleThreadExecutor.go:24 +0x9a
root@vmi585337:/home/redtea/everouting/backend# ./start.sh

If you passes a very large value, it will panic