Changed access to use this qualifier

src/main/java/appeng/container/slot/SlotPlayerInv.java

@@ -28,6 +28,6 @@ public class SlotPlayerInv extends AppEngSlot
 	public SlotPlayerInv(IInventory par1iInventory, int par2, int par3, int par4) {
 		super( par1iInventory, par2, par3, par4 );
 
-		isPlayerSide = true;
+		this.isPlayerSide = true;
 	}
 }