suppress warnings

Signed-off-by: Daniel Lenski <dlenski@gmail.com>

diff --git a/ppp.c b/ppp.c
index 7ee0e9694199d5ba10770900ebfaf274af81b723..6bcb8a0687719a8e72f65f87ceee3a1c9a9969e9 100644 (file)
--- a/ppp.c
+++ b/ppp.c
@@ -696,16 +696,16 @@ static int handle_state_transition(struct openconnect_info *vpninfo, int *timeou
 }
 
 static inline void add_ppp_header(struct pkt *p, struct oc_ppp *ppp, int proto) {
-       int n = 0;
+       unsigned char *ph = p->data;
        /* XX: store PPP header, in reverse */
-       p->data[--n] = proto & 0xff;
+       *--ph = proto & 0xff;
        if (proto > 0xff || !(ppp->out_lcp_opts & BIT_PFCOMP))
-               p->data[--n] = proto >> 8;
+               *--ph = proto >> 8;
        if (proto == PPP_LCP || !(ppp->out_lcp_opts & BIT_ACCOMP)) {
-               p->data[--n] = 0x03; /* Control */
-               p->data[--n] = 0xff; /* Address */
+               *--ph = 0x03; /* Control */
+               *--ph = 0xff; /* Address */
        }
-       p->ppp.hlen = -n;
+       p->ppp.hlen = p->data - ph;
 }
 
 int ppp_mainloop(struct openconnect_info *vpninfo, int *timeout, int readable)