Fixed a couple of minor obf translations

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

@@ -174,7 +174,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             bworld.dropItemNaturally(bukkitEntity.getLocation(), stack);
         }
 
-        this.y();
+        this.x();
         // CraftBukkit end
     }
 

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

@@ -114,8 +114,11 @@ public class ItemBlock extends Item {
 
                     // CraftBukkit end
 
-                    Block.byId[this.id].postPlace(world, i, j, k, l);
-                    Block.byId[this.id].postPlace(world, i, j, k, entityhuman);
+                    if (world.getTypeId(i, j, k) == this.id) {
+                        Block.byId[this.id].postPlace(world, i, j, k, l);
+                        Block.byId[this.id].postPlace(world, i, j, k, entityhuman);
+                    }
+
                     world.makeSound((double) ((float) i + 0.5F), (double) ((float) j + 0.5F), (double) ((float) k + 0.5F), block.stepSound.getName(), (block.stepSound.getVolume1() + 1.0F) / 2.0F, block.stepSound.getVolume2() * 0.8F);
                     --itemstack.count;
                 }