[Tool] fix: kl divergence

openmole/third-parties/org.openmole.tool.statistics/src/main/scala/org/openmole/tool/statistics/Stat.scala

@@ -208,7 +208,7 @@ trait Stat {
 
   def klDivergence(p1: Array[Double], p2: Array[Double]) = {
     val s = (p1 zip p2).
-      filter { case (p1, p2) ⇒ p1 == 0.0 || p2 == 0.0 }.
+      filter { case (p1, p2) ⇒ p1 != 0.0 && p2 != 0.0 }.
       map { case (p1, p2) ⇒ p1 * math.log(p1 / p2) }.sum
 
     s / math.log(2)