cr-dump: fix out-of-bounds write (OVERRUN)

CID 73381 (#1 of 1): Out-of-bounds write (OVERRUN)
15. overrun-local: Overrunning array loc_buf of 4096 bytes at byte offset 4096 using index len (which evaluates to 4096).

CID 73355 (#1 of 1): Out-of-bounds write (OVERRUN)
6. overrun-local: Overrunning array loc_buf of 4096 bytes at byte offset 4096 using index ret (which evaluates to 4096)
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-dump.c

@@ -573,7 +573,7 @@ static int get_task_personality(pid_t pid, u32 *personality)
 	if (fd < 0)
 		goto err;
 
-	ret = read(fd, loc_buf, sizeof(loc_buf));
+	ret = read(fd, loc_buf, sizeof(loc_buf) - 1);
 	close(fd);
 
 	if (ret >= 0) {
@@ -756,7 +756,7 @@ static int parse_children(pid_t pid, pid_t **_c, int *_n)
 		if (fd < 0)
 			goto err;
 
-		len = read(fd, loc_buf, sizeof(loc_buf));
+		len = read(fd, loc_buf, sizeof(loc_buf) - 1);
 		close(fd);
 		if (len < 0)
 			goto err;