added method to force an inventory update

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

@@ -126,7 +126,7 @@ public class Explosion {
                 DamageCause damageType;
                 int damageDone = (int) ((d10 * d10 + d10) / 2.0D * 8.0D * (double) this.f + 1.0D);
 
-                if(damagee == null){
+                if(damagee == null) {
                     // nothing was hurt
                 } else if (e == null) { // Block explosion
                     // TODO: get the x/y/z of the tnt block?

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -158,4 +158,8 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     public boolean isSneaking() {
         return entity.J();
     }
+    
+    public void updateInventory() {
+        entity.l();
+    }
 }