int → ptrdiff_t for read results

* src/fileio.c (Finsert_file_contents): Use ptrdiff_t, not int, to
store results returned by emacs_fd_read, which return ptrdiff_t.
This doesn’t fix any bugs since the values happen to fit in int,
but is a bit clearer and may simplify future changes.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fileio.c b/src/fileio.c
index bd8528af235..8150f4d8e12 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4501,7 +4501,7 @@ by calling `format-decode', which see.  */)
 
       while (!giveup_match_end)
         {
-          int total_read, nread, bufpos, trial;
+          ptrdiff_t total_read, nread, bufpos, trial;
           off_t curpos;
 
           /* At what file position are we now scanning?  */