Fixed #169 Thanks Quintinon and #170! Also some other fixes:

* Fixed calling local in an if statement where it is not required (lol).
* Fixed an issue with the auto walk checker.

src/otclient/creature.cpp

@@ -672,6 +672,9 @@ Point Creature::getDrawOffset()
 int Creature::getStepDuration(bool ignoreDiagonal)
 {
     int speed = m_speed;
+    if(speed < 1)
+        return 0;
+
     if(g_game.getFeature(Otc::GameNewSpeedLaw))
         speed *= 2;