Avoid compilation warnings in gnutls.c on 64-bit hosts.

 src/gnutls.c (emacs_gnutls_handshake): Avoid compiler warnings about
 "cast to pointer from integer of different size".

src/ChangeLog

 2011-04-25  Eli Zaretskii  <eliz@gnu.org>
 
+	* gnutls.c (emacs_gnutls_handshake): Avoid compiler warnings about
+	"cast to pointer from integer of different size".
+
 	Improve doprnt and its use in verror.  (Bug#8545)
 	* doprnt.c (doprnt): Document the set of format control sequences
 	supported by the function.  Use SAFE_ALLOCA instead of always

src/gnutls.c

@@ -101,8 +101,8 @@ emacs_gnutls_handshake (struct Lisp_Process *proc)
          in.  For an Emacs process socket, infd and outfd are the
          same but we use this two-argument version for clarity.  */
       gnutls_transport_set_ptr2 (state,
-        			 (gnutls_transport_ptr_t) proc->infd,
-        			 (gnutls_transport_ptr_t) proc->outfd);
+        			 (gnutls_transport_ptr_t) (long) proc->infd,
+        			 (gnutls_transport_ptr_t) (long) proc->outfd);
 #endif
 
       proc->gnutls_initstage = GNUTLS_STAGE_TRANSPORT_POINTERS_SET;