check the real distance to target in aipursue

apps/openmw/mwmechanics/aipursue.cpp

@@ -50,8 +50,13 @@ bool AiPursue::execute (const MWWorld::Ptr& actor, CharacterController& characte
 
     //Set the target desition from the actor
     ESM::Pathgrid::Point dest = target.getRefData().getPosition().pos;
+    ESM::Position aPos = actor.getRefData().getPosition();
 
-    if (pathTo(actor, dest, duration, 100)) {
+    float pathTolerance = 100.0;
+
+    if (pathTo(actor, dest, duration, pathTolerance) &&
+        MWMechanics::distance(dest,aPos.pos[0],aPos.pos[1],aPos.pos[2]) < pathTolerance)  // check the true distance in case the target is far away in Z-direction
+    {
         target.getClass().activate(target,actor).get()->execute(actor); //Arrest player when reached
         return true;
     }