Hi,

I found a memory leak in the latest commit 76e7758 on master.

PoC: https://github.com/strongcourage/PoCs/blob/master/patch_76e7758/PoC_ml
Command: patch -Rf < $PoC

ASAN says:
==16487==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 56 byte(s) in 4 object(s) allocated from:
    #0 0x7f7544c79662 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98662)
    #1 0x448729 in xmalloc ../../lib/xmalloc.c:41
    #2 0x42556f in make_tempfile ../../src/util.c:1673
    #3 0x4062eb in main ../../src/patch.c:322
    #4 0x7f754483782f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

Direct leak of 56 byte(s) in 4 object(s) allocated from:
    #0 0x7f7544c79662 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98662)
    #1 0x448729 in xmalloc ../../lib/xmalloc.c:41
    #2 0x42556f in make_tempfile ../../src/util.c:1673
    #3 0x40b28e in init_reject ../../src/patch.c:1624
    #4 0x40a329 in abort_hunk ../../src/patch.c:1413
    #5 0x406b0f in main ../../src/patch.c:489
    #6 0x7f754483782f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

SUMMARY: AddressSanitizer: 112 byte(s) leaked in 8 allocation(s).

Thanks,
Manh Dung