Memory leakage occurs in yajl_tree_parse in case invalid json

[beelyl0]

We just used you library and checked it in case invalid json through valgrind ( soft for detecting mem leaks and other errors ), we had memory leaks,
my json that i tested:
{
"key" : "value
}

My peace of code:
node = yajl_tree_parse((const char *) data, errbuf, sizeof (errbuf));
if (node == NULL) {
return NULL;
}

Valgrind report:
==14281== Memcheck, a memory error detector
==14281== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==14281== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==14281== Command: ./json_parser_libtest
==14281==
==14281==
==14281== HEAP SUMMARY:
==14281== in use at exit: 414 bytes in 5 blocks
==14281== total heap usage: 13 allocs, 8 frees, 896 bytes allocated
==14281==
==14281== 18 bytes in 1 blocks are definitely lost in loss record 2 of 5
==14281== at 0x402B9FD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==14281== by 0x4128524: (below main) (in /lib/libc-2.17.so)
==14281==
==14281== 44 (12 direct, 32 indirect) bytes in 1 blocks are definitely lost in loss record 4 of 5
==14281== at 0x402B9FD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==14281== by 0x41098E7: handle_start_map (yajl_tree.c:339)
==14281== by 0x410573D: yajl_do_parse (yajl_parser.c:269)
==14281== by 0x41022E4: yajl_parse (yajl.c:130)
==14281== by 0x4109BB5: yajl_tree_parse (yajl_tree.c:435)
==14281== by 0x40450DE: json_parser (json.c:175)
==14281== by 0x8048A73: main (json_parser_libtest.c:38)
==14281==
==14281== LEAK SUMMARY:
==14281== definitely lost: 30 bytes in 2 blocks
==14281== indirectly lost: 32 bytes in 2 blocks
==14281== possibly lost: 0 bytes in 0 blocks
==14281== still reachable: 352 bytes in 1 blocks
==14281== suppressed: 0 bytes in 0 blocks
==14281== Reachable blocks (those to which a pointer was found) are not shown.
==14281== To see them, rerun with: --leak-check=full --show-reachable=yes
==14281==
==14281== For counts of detected and suppressed errors, rerun with: -v
==14281== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)

[savagecm]

I met the same issue, anyone got an idea? @halostatue @mirek @beelyl0 @bluemarvin @tjw

[Jesin]

#168 should fix it.