Fix ClearTickList to return correct value

Previously it always returned false, this fixes it to return whatever value the user has it set to.

CraftBukkit-Patches/0005-Better-Chunk-Tick-Selection.patch

@@ -181,7 +181,7 @@ index 961ddb4..6ba7f5c 100644
 +        log( "Chunks to Grow per Tick: " + chunksPerTick );
 +
 +        clearChunksOnTick = getBoolean( "clear-tick-list", false );
-+        log( "Clear tick list: " + false );
++        log( "Clear tick list: " + clearChunksOnTick );
 +    }
  }
 --