use ssize_t and size_t for read- and write-like emacs_gnutls_* functions

* gnutls.c (emacs_gnutls_read): Adjust signature to be more read-like:
return ssize_t not "int", and use size_t as the buffer length.
(emacs_gnutls_write): Likewise, and make the buffer pointer "const".
* gnutls.h: Update declarations.
* process.c (read_process_output): Use ssize_t, to match.
(send_process): Likewise.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/process.c b/src/process.c
index 6cddbf6d1a9..624610069d8 100644
--- a/src/process.c
+++ b/src/process.c
@@ -4898,7 +4898,7 @@ read_process_output_error_handler (Lisp_Object error_val)
 static int
 read_process_output (Lisp_Object proc, register int channel)
 {
-  register int nbytes;
+  register ssize_t nbytes;
   char *chars;
   register Lisp_Object outstream;
   register struct Lisp_Process *p = XPROCESS (proc);
@@ -5243,7 +5243,7 @@ send_process (volatile Lisp_Object proc, const char *volatile buf,
 {
   /* Use volatile to protect variables from being clobbered by longjmp.  */
   struct Lisp_Process *p = XPROCESS (proc);
-  EMACS_INT rv;
+  ssize_t rv;
   struct coding_system *coding;
   struct gcpro gcpro1;
   void (*volatile old_sigpipe) (int);