[PATCH] script: do not try to close stderr twice

[Sami Kerola <kerolasa@iki.fi>]

The commit cdd2a8c360c70d16804ace7cc923a6c6bb7c9ca9 broke script(1)
return value.

$ script -e -c "echo"; echo $?
1

The reason, as Daniel it reported, was that the script will close stderr
twice, once as timing file and atexit() in function close_stdout().  This
commit fixes the problem.

Reported-by: Daniel Narvaez <dwnarvaez@gmail.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
 term-utils/script.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/term-utils/script.c b/term-utils/script.c
index ccd8873..94a20da 100644
--- a/term-utils/script.c
+++ b/term-utils/script.c
@@ -159,7 +159,7 @@ main(int argc, char **argv) {
 	sigset_t block_mask, unblock_mask;
 	struct sigaction sa;
 	int ch;
-	FILE *timingfd = stderr;
+	FILE *timingfd = NULL;
 
 	enum { FORCE_OPTION = CHAR_MAX + 1 };
 
@@ -274,9 +274,11 @@ main(int argc, char **argv) {
 			warn(_("fork failed"));
 			fail();
 		}
-		if (child)
+		if (child) {
+			if (!timingfd)
+				timingfd = fdopen(STDERR_FILENO, "w");
 			dooutput(timingfd);
-		else
+		} else
 			doshell();
 	} else {
 		sa.sa_handler = resize;
-- 
1.8.0