Fix sub() in list-out-of-lambda.html
    
        | author | Ivan Vyshnevskyi <sainaen@gmail.com> | 
    
        | date | Sun, 31 Mar 2013 18:32:09 +0300 | 
    
    
        | parents | 56490526347a | 
    
        | children | bb7f34f82be5 | 
    
        | branches/tags | (none) | 
    
        | files | content/blog/2013/03/list-out-of-lambda.html | 
Changes
    
--- a/content/blog/2013/03/list-out-of-lambda.html	Sat Mar 30 14:10:03 2013 -0400
+++ b/content/blog/2013/03/list-out-of-lambda.html	Sun Mar 31 18:32:09 2013 +0300
@@ -789,7 +789,7 @@
         if (is_zero(b)) {
             return a;
         } else {
-            return add(dec(a), dec(b));
+            return sub(dec(a), dec(b));
         }
     };