simplify cpp usage in wait_reading_process_output

diff --git a/src/process.c b/src/process.c
index 394f719..0b6321a 100644 (file)
--- a/src/process.c
+++ b/src/process.c
@@ -4586,16 +4586,18 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
 #endif
 
 #if defined (HAVE_NS)
-          nfds = ns_select
+# define SELECT ns_select
 #elif defined (HAVE_GLIB)
-         nfds = xg_select
+# define SELECT xg_select
 #else
-         nfds = pselect
+# define SELECT pselect
 #endif
+          nfds = SELECT
             (max (max_process_desc, max_input_desc) + 1,
              &Available,
              (check_write ? &Writeok : 0),
              NULL, &timeout, NULL);
+#undef SELECT
 
 #ifdef HAVE_GNUTLS
           /* GnuTLS buffers data internally.  In lowat mode it leaves