EthernetClient - initialize uip_userdata_t packets indexes

Author: JAndrassy

src/EthernetClient.h

@@ -46,8 +46,8 @@ typedef struct {
 typedef struct {
   uint8_t conn_index;
   uint8_t state;
-  memhandle packets_in[UIP_SOCKET_NUMPACKETS];
-  memhandle packets_out[UIP_SOCKET_NUMPACKETS];
+  memhandle packets_in[UIP_SOCKET_NUMPACKETS] = {NOBLOCK};
+  memhandle packets_out[UIP_SOCKET_NUMPACKETS] = {NOBLOCK};
   memaddress out_pos;
 #if UIP_CLIENT_TIMER >= 0
   unsigned long timer;