Infinite loop in triangulateHull when detailSampleDist == 0

[MichaelSuen-thePointer]

Looks like setting detailSampleDist to 0 but also calling rcBuildPolyMeshDetail is accepted.

But when detailSampleDist is 0, nhull in buildPolyDetail is 0, thus making left = 1 and right = -1 in triangulateHull, which then caused an infinite loop here

I'm not very familiar with the code logic here, should it be changed to next(left, nhull) < right ?