crash with memcpy

[AssociationSirius]

with bug comment fixed:

Function tjei_encode_main crash at execution

---

When compile, GCC say:

In function ‘void* memcpy(void_, const void_, size_t)’,
inlined from ‘int tjei_encode_main(TJEState_, const unsigned char_, int, int, int)’ at tiny_jpeg.h:948:59:
/usr/include/x86_64-linux-gnu/bits/string3.h:53:71: warning: call to void* builtin___memcpy_chk(void, const void, long unsigned int, long unsigned int) will always overflow destination buffer
return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));