Fix canceling BlockPlaceEvent

nms-patches/ItemStack.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/ItemStack.java	2014-11-28 17:43:43.241707432 +0000
-+++ src/main/java/net/minecraft/server/ItemStack.java	2014-11-28 17:38:20.000000000 +0000
+--- ../work/decompile-8eb82bde//net/minecraft/server/ItemStack.java	2014-11-29 21:16:43.705017876 +0000
++++ src/main/java/net/minecraft/server/ItemStack.java	2014-11-29 21:16:36.581018034 +0000
 @@ -5,6 +5,18 @@
  import java.text.DecimalFormat;
  import java.util.Random;

nms-patches/World.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/World.java	2014-11-29 21:08:51.989028346 +0000
-+++ src/main/java/net/minecraft/server/World.java	2014-11-29 21:07:57.617029552 +0000
+--- ../work/decompile-8eb82bde//net/minecraft/server/World.java	2014-11-29 21:17:20.461017061 +0000
++++ src/main/java/net/minecraft/server/World.java	2014-11-29 21:17:07.617017346 +0000
 @@ -13,6 +13,22 @@
  import java.util.UUID;
  import java.util.concurrent.Callable;
@@ -53,7 +53,7 @@
 +            while( blockStateIterator.hasNext() ) {
 +                BlockState blockState1 = blockStateIterator.next();
 +                if ( blockState1.getLocation().equals( blockState.getLocation() ) ) {
-+                    blockStateIterator.remove();
++                    return false;
 +                }
 +            }
 +
@@ -141,7 +141,7 @@
  
              if (iblockdata1 == null) {
 +                // CraftBukkit start - remove blockstate if failed
-+                if (!this.captureBlockStates) {
++                if (this.captureBlockStates) {
 +                    this.capturedBlockStates.remove(blockstate);
 +                }
 +                // CraftBukkit end