valgrind shows memry leak

[abbycin]

~  cd mnt
~/mnt  git clone https://github.com/ankurs/Hash-Table
Cloning into 'Hash-Table'...
remote: Counting objects: 43, done.
remote: Total 43 (delta 0), reused 0 (delta 0), pack-reused 43
Unpacking objects: 100% (43/43), done.
Checking connectivity... done.
~/mnt  cd Hash-Table
~/mnt/Hash-Table   master  ls
debug.h hashtable.c hashtable.h LICENSE main.c Makefile
~/mnt/Hash-Table   master  cc main.c hashtable.c
~/mnt/Hash-Table   master  valgrind --leak-check=full --track-origins=yes ./a.out
//----------------------------------------------------------------------------------------------------------------------------------
==5243== LEAK SUMMARY:
==5243== definitely lost: 52,712 bytes in 5 blocks
==5243== indirectly lost: 295,546 bytes in 12,585 blocks
==5243== possibly lost: 0 bytes in 0 blocks
==5243== still reachable: 0 bytes in 0 blocks
==5243== suppressed: 0 bytes in 0 blocks
==5243==
==5243== For counts of detected and suppressed errors, rerun with: -v
==5243== ERROR SUMMARY: 3 errors from 3 contexts (suppressed: 0 from 0)
Key NOT found 3000
found 3000 keys
j -> 2999
value is 3097