[PATCH] upload-pack: keep poll(2)'s timeout to -1

[Edward Thomson <ethomson@edwardthomson.com>]

Keep poll's timeout at -1 when uploadpack.keepalive = 0, instead of
setting it to -1000, since some pedantic old systems (eg HP-UX) and
the gnulib compat/poll will treat only -1 as the valid value for
an infinite timeout.

Signed-off-by: Edward Thomson <ethomson@microsoft.com>
---
 upload-pack.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/upload-pack.c b/upload-pack.c
index 01de944..433211a 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -167,7 +167,9 @@ static void create_pack_file(void)
 		if (!pollsize)
 			break;
 
-		ret = poll(pfd, pollsize, 1000 * keepalive);
+		ret = poll(pfd, pollsize,
+			keepalive < 0 ? -1 : 1000 * keepalive);
+
 		if (ret < 0) {
 			if (errno != EINTR) {
 				error("poll failed, resuming: %s",
-- 
1.7.10.4