dload.c : clear sigaction flag to make valgrind happy

This fixes the following valgrind warning :

==26831== Syscall param rt_sigaction(act->sa_flags) points to uninitialised
byte(s)
==26831==    at 0x4282547: __libc_sigaction (in /lib/libc-2.10.1.so)
==26831==    by 0x403C693: download_internal (dload.c:152)
==26831==    by 0x403D0E4: _alpm_download_single_file (dload.c:311)
==26831==    by 0x4033B72: alpm_db_update (be_files.c:319)
==26831==    by 0x805205E: pacman_sync (sync.c:257)
==26831==    by 0x804EE54: main (pacman.c:1120)
==26831==  Address 0xbec6cc04 is on thread 1's stack
==26831==
==26831== Syscall param rt_sigaction(act->sa_restorer) points to
uninitialised byte(s)
==26831==    at 0x4282547: __libc_sigaction (in /lib/libc-2.10.1.so)
==26831==    by 0x403C693: download_internal (dload.c:152)
==26831==    by 0x403D0E4: _alpm_download_single_file (dload.c:311)
==26831==    by 0x4033B72: alpm_db_update (be_files.c:319)
==26831==    by 0x805205E: pacman_sync (sync.c:257)
==26831==    by 0x804EE54: main (pacman.c:1120)
==26831==  Address 0xbec6cc08 is on thread 1's stack
==26831==

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index 4989d4ac..a4c9f1f4 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -147,6 +147,7 @@ static int download_internal(const char *url, const char *localpath,
 	 * something along those lines. Store the old signal handler first. */
 	new_action.sa_handler = SIG_IGN;
 	sigemptyset(&new_action.sa_mask);
+	new_action.sa_flags = 0;
 	sigaction(SIGPIPE, NULL, &old_action);
 	sigaction(SIGPIPE, &new_action, NULL);