io: include typesizes.h before using macro __OFF_T_MATCHES_OFF64_T

  The macro __OFF_T_MATCHES_OFF64_T is defined in typesizes.h if the
data type of off_t is the same as off64_t. Hence the condition
"#ifndef __OFF_T_MATCHES_OFF64_T" will be valid when the header file
typesizes.h is included.
---
 ChangeLog  | 5 +++++
 io/lockf.c | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)
  

On 27/06/2019 12:40, Vincent Chen wrote:
> The macro __OFF_T_MATCHES_OFF64_T is defined in typesizes.h if the
> data type of off_t is the same as off64_t. Hence the condition
> "#ifndef __OFF_T_MATCHES_OFF64_T" will be valid when the header file
> typesizes.h is included.

LGTM, thanks.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

PS: it is usual to indicate how you actually tested the change,
something line 'check on x86_64' or 'check on aarch64-linux-gnu'.

> ---
>  ChangeLog  | 5 +++++
>  io/lockf.c | 4 ++--
>  2 files changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/ChangeLog b/ChangeLog
> index c10f372..57e87cc 100644
> --- a/ChangeLog
> +++ b/ChangeLog
> @@ -1,3 +1,8 @@
> +2019-06-27  Vincentc Chen  <vincentc@andestech.com>
> +
> +	* io/lockf.c: include typesizes.h before using macro
> +	__OFF_T_MATCHES_OFF64_T.
> + 
>  2019-06-26  H.J. Lu  <hongjiu.lu@intel.com>
>  
>  	* sysdeps/i386/dl-lookupcfg.h: Moved to ...
> diff --git a/io/lockf.c b/io/lockf.c
> index d40aa88..a8a8530 100644
> --- a/io/lockf.c
> +++ b/io/lockf.c
> @@ -15,12 +15,12 @@
>     License along with the GNU C Library; if not, see
>     <http://www.gnu.org/licenses/>.  */
>  
> -#ifndef __OFF_T_MATCHES_OFF64_T
> -
>  #include <unistd.h>
>  #include <fcntl.h>
>  #include <errno.h>
>  
> +#ifndef __OFF_T_MATCHES_OFF64_T
> +
>  /* lockf is a simplified interface to fcntl's locking facilities.  */
>  int
>  lockf (int fd, int cmd, off_t len)
>