Author: Unknown
Subject: free memory followup
Date: Thursday, 30 Apr 2020, 00:17:41

All storage must be reachable when Boggle exits, not
    freed.

--> Does this mean that in the valgrind leak summary, as long as we have 0 bytes in each item except for "still reachable", we're safe?

Eg:

LEAK SUMMARY:
==18241==    definitely lost: 0 bytes in 0 blocks
==18241==    indirectly lost: 0 bytes in 0 blocks
==18241==      possibly lost: 0 bytes in 0 blocks
==18241==    still reachable: 11,161 bytes in 59 blocks
==18241==         suppressed: 0 bytes in 0 blocks