Fixed invalid fix for bug #30402 (CHECKSUM_GEN_IP_INLINE does not add IP options)

CHANGELOG

@@ -229,6 +229,10 @@ HISTORY
 
   ++ Bugfixes:
 
+  2010-07-21: Simon Goldschmidt
+  * ip.c: Fixed invalid fix for bug #30402 (CHECKSUM_GEN_IP_INLINE does not
+    add IP options)
+
   2010-07-16: Kieran Mansley
   * msg_in.c: Fixed SNMP ASN constant defines to not use ! operator 
 

src/core/ipv4/ip.c

@@ -625,7 +625,7 @@ err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
         memset(((char*)p->payload) + optlen, 0, optlen_aligned - optlen);
       }
 #if CHECKSUM_GEN_IP_INLINE
-      for (i = 0; i < optlen_aligned; i += sizeof(u16_t)) {
+      for (i = 0; i < optlen_aligned/2; i++) {
         chk_sum += ((u16_t*)p->payload)[i];
       }
 #endif /* CHECKSUM_GEN_IP_INLINE */