--- ../work/decompile-bb26c12b/net/minecraft/server/WorldGenGroundBush.java	2014-11-27 08:59:46.925420860 +1100
+++ src/main/java/net/minecraft/server/WorldGenGroundBush.java	2014-11-27 08:42:10.144850927 +1100
@@ -46,7 +46,11 @@
                     }
                 }
             }
+        // CraftBukkit start - Return false if gen was unsuccessful
+        } else {
+            return false;
         }
+        // CraftBukkit end
 
         return true;
     }