open-process: close-on-exec bugfix.

This is a regression introduce in the 2019-06-09 commit
4f33b169dc547b7f9af6f2f1c173d36fc4d62fe8 "Adding fcntl
interface." which changed HAVE_FCNTL_H to HAVE_FCNTL
in the configure script, without making the same change
in stream.c.

* stream.c: Replace HAVE_FCNTL_H with the correct
HAVE_FCNTL, so that we're once again actually including
the <fcntl.h> header now, and setting the close-on-exec
flag on the pipe in open-process.

1 files changed, 2 insertions, 2 deletions

diff --git a/stream.c b/stream.c
index a57f9280..0993ef97 100644
--- a/stream.c
+++ b/stream.c
@@ -43,7 +43,7 @@
 #ifdef __CYGWIN__
 #include <sys/utsname.h>
 #endif
-#if HAVE_FCNTL_H
+#if HAVE_FCNTL
 #include <fcntl.h>
 #endif
 #include <float.h>
@@ -4126,7 +4126,7 @@ val open_process(val name, val mode_str, val args)
       free(argv[i]);
     free(argv);
 
-#if HAVE_FCNTL_H
+#if HAVE_FCNTL
     fcntl(whichfd, F_SETFD, FD_CLOEXEC);
 #endif