Index: aoc2015.c
==================================================================
--- aoc2015.c
+++ aoc2015.c
@@ -85,10 +85,11 @@
             house[nhouse].col = p[who].col;
             nhouse += 1;
         }
         who = 1 - who; // santa; bot; santa; bot; ..., ..., ...
     }
+    free(house);
     printf("Santa and santa bot delivered at least 1 present to %u houses.\n", nhouse);
 }
 
 void aoc201502(char *data, size_t len) {
     (void)len; // unused argument