Test return value of finish_connect()

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

send-pack.c

@@ -408,6 +408,6 @@ int main(int argc, char **argv)
 	ret = send_pack(fd[0], fd[1], nr_heads, heads);
 	close(fd[0]);
 	close(fd[1]);
-	finish_connect(pid);
-	return ret;
+	ret |= finish_connect(pid);
+	return !!ret;
 }