parasite: Init ret variable

Compiler doesn't like the ret unitialized
here (it's not a problem since SIGMAX is
never less than 1).
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

parasite.c

@@ -264,7 +264,7 @@ static int dump_pages_fini(void)
 
 static int dump_sigact(struct parasite_dump_sa_args *da)
 {
-	int sig, ret;
+	int sig, ret = 0;
 
 	for (sig = 1; sig < SIGMAX; sig++) {
 		if (sig == SIGKILL || sig == SIGSTOP)