diff --git a/2020/day22/OUTPUT b/2020/day22/OUTPUT
deleted file mode 100644
index ae03c9c..0000000
--- a/2020/day22/OUTPUT
+++ /dev/null
@@ -1,8 +0,0 @@
-ex1.bash: res=31314
-	time: 0:00.07 real, 0.06 user, 0.00 sys
-	context-switch:	2+1, page-faults: 0+168
-
-ex2.bash: res=32760
-	time: 1:21.92 real, 81.89 user, 0.01 sys
-	context-switch:	462+1, page-faults: 0+5135
-
diff --git a/2020/day22/aoc-c.c b/2020/day22/aoc-c.c
index a8c37d2..8da5afb 100644
--- a/2020/day22/aoc-c.c
+++ b/2020/day22/aoc-c.c
@@ -13,13 +13,13 @@
 #include "pool.h"
 
 typedef struct card {
-    u8 card;               /* card value */
-    struct list_head list; /* list of cards */
+    u8 card;                                      /* card value */
+    struct list_head list;                        /* list of cards */
 } card_t;
 
 typedef struct player {
-    int ncards;            /* player cards # */
-    struct list_head head; /* head of cards list */
+    int ncards;                                   /* player cards # */
+    struct list_head head;                        /* head of cards list */
 } player_t;
 
 /* zobrist hash used to find duplicate positions
@@ -309,5 +309,7 @@ int main(int ac, char **av)
     long res = part == 1 ? part1(players): part2(players);
 
     printf("%s : res=%ld\n", *av, res);
+    pool_destroy(pool_hash);
+    pool_destroy(pool_cards);
     exit(0);
 }