--- ../src-base/minecraft/net/minecraft/world/gen/feature/WorldGenShrub.java
+++ ../src-work/minecraft/net/minecraft/world/gen/feature/WorldGenShrub.java
@@ -62,7 +62,13 @@
                     }
                 }
             }
+        // CraftBukkit start - Return false if gen was unsuccessful
+        } 
+        else 
+        {
+            return false;
         }
+        // CraftBukkit end
 
         return true;
     }