PaperMC/nms-patches/WorldGenGroundBush.patch

--- /home/matt/mc-dev-private//net/minecraft/server/WorldGenGroundBush.java	2015-02-26 22:40:23.195608133 +0000
+++ src/main/java/net/minecraft/server/WorldGenGroundBush.java	2015-02-26 22:40:23.195608133 +0000
@@ -46,7 +46,12 @@
                     }
                 }
             }
+        // CraftBukkit start - Return false if gen was unsuccessful
+        } else {
+            return false;
         }
+        // CraftBukkit end
+
 
         return true;
     }