bug#27597: [PATCH] fix warnings in src/xdisp.c

[Eli Zaretskii]

> From: Alexander Kuleshov <kuleshovmail@gmail.com>
> Date: Thu, 6 Jul 2017 17:47:03 +0600
> 
> here is simple fix for following warnings:
> 
> xdisp.c: In function ‘Fdump_glyph_matrix’:
> xdisp.c:19320:20: error: format ‘%lld’ expects argument of type ‘long
> long int’, but argument 3 has type ‘ptrdiff_t {aka long int}’
> [-Werror=format=]
>    fprintf (stderr, "PT = %"pI"d, BEGV = %"pI"d. ZV = %"pI"d\n",
> 
> from src/xdisp.c

Thanks, pushed to master.

In the future, please provide a commit log message that is according
to our coding standards:

 . mention the names of functions in which you make changes
 . start sentences with a capital letter
 . mention the bug number

Here's the log message I used in this case:

        * src/xdisp.c (dump_glyph, dump_glyph_row, Fdump_glyph_matrix):
        Use pD directives for ptrdiff_t values instead of pI, to avoid
        compilation warnings on 64-bit hosts.  (Bug#27597)