Bug#770005: mbuffer: dies in main on assertion err == 0

[Bernhard Übelacker]

Hello,
seems that the FreeBSD kernel wants the sigaction struct better initilized.

With attached patch the assertion does not happen in a test vm for me
anymore.

Kind regards,
Bernhard

Description: Initialize sigaction struct
Author: Bernhard Übelacker <bernha...@vr-web.de>
Bug-Debian: https://bugs.debian.org/770005
Last-Update: <2014-11-18>

--- mbuffer-20140310.orig/mbuffer.c
+++ mbuffer-20140310/mbuffer.c
@@ -2355,6 +2355,8 @@ int main(int argc, const char **argv)
 
 	debugmsg("checking if we have a controlling terminal...\n");
 	sig.sa_handler = SIG_IGN;
+	sigemptyset(&sig.sa_mask);
+	sig.sa_flags = 0;
 	err = sigaction(SIGTTIN,&sig,0);
 	assert(err == 0);
 	fl = fcntl(STDERR_FILENO,F_GETFL);