Fix issue #155 (only tested on pv973)

Please let me know if pv870+ works now.
Note:
 * pv = protocol version,
 * cv = client version
For people wondering.

src/otclient/game.cpp

@@ -506,9 +506,10 @@ bool Game::walk(Otc::Direction direction)
         return false;
     }
 
-    // must add a new walk event
+    // check we can walk and add new walk event if false
     if(!m_localPlayer->canWalk(direction)) {
         if(m_lastWalkDir != direction) {
+            // must add a new walk event
             float ticks = m_localPlayer->getStepTicksLeft();
             if(ticks < 0)
                 ticks = 0;

src/otclient/item.cpp

@@ -216,9 +216,9 @@ int Item::getSubType()
 {
     if(isSplash() || isFluidContainer())
         return m_countOrSubType;
-    if(g_game.getProtocolVersion() >= 900)
-        return 0;
+    if(m_countOrSubType > 0 && g_game.getProtocolVersion() >= 870)
         return 1;
+    return 0;
 }
 
 int Item::getCount()