Fixed an exploit allowing item duplication upon death

src/main/java/net/minecraft/server/EntityPlayer.java

@@ -94,12 +94,14 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
         for (int i = 0; i < inventory.a.length; ++i) {
             if (inventory.a[i] != null) {
                 loot.add(new CraftItemStack(inventory.a[i]));
+                inventory.a[i] = null;
             }
         }
 
         for (int i = 0; i < inventory.b.length; ++i) {
             if (inventory.b[i] != null) {
                 loot.add(new CraftItemStack(inventory.b[i]));
+                inventory.a[i] = null;
             }
         }