I'm using GNU Linear Programming Kit at my program. Everything works fine, but when I checked program with valgrind I found some memory leaks:

```
==7051== 160 bytes in 1 blocks are still reachable in loss record 1 of 3
==7051==    at 0x4C28BED: malloc (vg_replace_malloc.c:263)
==7051==    by 0x52CFACB: glp_init_env (in /usr/lib/libglpk.so.0.30.0)
==7051==    by 0x52CFC1C: ??? (in /usr/lib/libglpk.so.0.30.0)
==7051==    by 0x52D0211: glp_malloc (in /usr/lib/libglpk.so.0.30.0)
==7051==    by 0x52AC50A: glp_create_prob (in /usr/lib/libglpk.so.0.30.0)

```

According to documentation `glp_init_env(void)` is called on first use of any GLPK API call. But to clean it up, one would have need to call `glp_free_env(void)`.

I want my program to be memory leak free, and simply calling `glp_free_env();` manually isn't a good solution for me - I have some unit tests written with Boost Unit Test Framework and I want them to be memory leak free too.

Ideally I would use some C++ feature that could call it automatically on program termination. Do you know any simple and clean way do do it?