Movement bug fix. Npc mistakenly move away from its new target.

src/server/game/Movement/MovementGenerators/TargetedMovementGenerator.cpp

@@ -48,6 +48,9 @@ void TargetedMovementGeneratorMedium<T, D>::_setTargetLocation(T* owner, bool up
     {
         if (!i_offset)
         {
+            if (i_target->IsWithinDistInMap(owner, CONTACT_DISTANCE))
+                return;
+
             // to nearest contact position
             i_target->GetContactPoint(owner, x, y, z);
         }