[LTP] [PATCH 2/2] Refactor setresgit04 test

[Petr Vorel]

Hi Andrea,

again, here I merged with SETRESGID() to keep the check for 16-bit support:

-       TST_EXP_PASS(setresgid(-1, ltpuser->pw_gid, -1));
+       TST_EXP_PASS(SETRESGID(-1, ltpuser->pw_gid, -1));

Thanks!

Kind regards,
Petr