[PATCH 1/3] packet_get(): don't try to receive packet in case of error

[Vitezslav Samel]

Don't try to receive packet or get keyboard press in case
of select() returns error or zero fd's prepared.

Signed-off-by: Vitezslav Samel 
---
 src/packet.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/packet.c b/src/packet.c
index 3e7181a..b48e98f 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -154,7 +154,7 @@ void packet_get(int fd, struct pkt_hdr *pkt, int *ch, WINDOW *win)
    } while ((ss < 0) && (errno == EINTR));

pkt->pkt_len = 0;	/* signalize we have no packet prepared */
-	if (FD_ISSET(fd, &set)) {
+	if ((ss > 0) && FD_ISSET(fd, &set)) {
    	struct sockaddr_ll from;
    	socklen_t fromlen = sizeof(struct sockaddr_ll);
    	ssize_t len;
@@ -176,7 +176,7 @@ void packet_get(int fd, struct pkt_hdr *pkt, int *ch, WINDOW *win)
    }

*ch = ERR;	/* signalize we have no key ready */
-	if (!daemonized && FD_ISSET(0, &set))
+	if (!daemonized && (ss > 0) && FD_ISSET(0, &set))
    	*ch = wgetch(win);
 }