sbrk02.c: Use TST_EXP_FAIL_PTR_VOID

Signed-off-by: Wei Gao <wegao@suse.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>

Author: Wei Gao via ltp

testcases/kernel/syscalls/sbrk/sbrk02.c

@@ -19,21 +19,8 @@ static long increment = INC;
 
 static void run(void)
 {
-	TESTPTR(sbrk(increment));
-
-	if (TST_RET_PTR != (void *)-1) {
-		tst_res(TFAIL, "sbrk(%ld) unexpectedly passed and returned %p, "
-						"expected (void *)-1 with errno=%d",
-						increment, TST_RET_PTR, ENOMEM);
-		return;
-	}
-
-	if (TST_ERR == ENOMEM)
-		tst_res(TPASS | TTERRNO, "sbrk(%ld) failed as expected", increment);
-	else
-		tst_res(TFAIL | TTERRNO, "sbrk(%ld) failed but unexpected errno, "
-								"expected errno=%d - %s",
-								increment, ENOMEM, strerror(ENOMEM));
+	TST_EXP_FAIL_PTR_VOID(sbrk(increment), ENOMEM,
+		"sbrk(%ld) returned %p", increment, TST_RET_PTR);
 }
 
 static void setup(void)