net/icmp: consume the data length to avoid duplicate packet

Signed-off-by: chao.an <anchao@xiaomi.com>

net/icmp/icmp_recvmsg.c

@@ -182,6 +182,7 @@ static uint16_t recvfrom_eventhandler(FAR struct net_driver_s *dev,
           /* Indicate that the data has been consumed */
 
           flags     &= ~ICMP_NEWDATA;
+          dev->d_len = 0;
           goto end_wait;
         }
 

net/icmpv6/icmpv6_recvmsg.c

@@ -189,6 +189,7 @@ static uint16_t recvfrom_eventhandler(FAR struct net_driver_s *dev,
           /* Indicate that the data has been consumed */
 
           flags     &= ~ICMPv6_NEWDATA;
+          dev->d_len = 0;
           goto end_wait;
         }