gnrc_icmpv6_error: centralize send function

sys/net/gnrc/network_layer/icmpv6/error/gnrc_icmpv6_error.c

@@ -122,23 +122,26 @@ static gnrc_pktsnip_t *_param_prob_build(uint8_t code, void *ptr,
     return pkt;
 }
 
-void gnrc_icmpv6_error_dst_unr_send(uint8_t code, const gnrc_pktsnip_t *orig_pkt)
+static void _send(gnrc_pktsnip_t *pkt)
 {
-    gnrc_pktsnip_t *pkt = _dst_unr_build(code, orig_pkt);
-
     if (pkt != NULL) {
         gnrc_netapi_send(gnrc_ipv6_pid, pkt);
     }
 }
 
+void gnrc_icmpv6_error_dst_unr_send(uint8_t code, const gnrc_pktsnip_t *orig_pkt)
+{
+    gnrc_pktsnip_t *pkt = _dst_unr_build(code, orig_pkt);
+
+    _send(pkt);
+}
+
 void gnrc_icmpv6_error_pkt_too_big_send(uint32_t mtu,
                                         const gnrc_pktsnip_t *orig_pkt)
 {
     gnrc_pktsnip_t *pkt = _pkt_too_big_build(mtu, orig_pkt);
 
-    if (pkt != NULL) {
-        gnrc_netapi_send(gnrc_ipv6_pid, pkt);
-    }
+    _send(pkt);
 }
 
 void gnrc_icmpv6_error_time_exc_send(uint8_t code,
@@ -146,9 +149,7 @@ void gnrc_icmpv6_error_time_exc_send(uint8_t code,
 {
     gnrc_pktsnip_t *pkt = _time_exc_build(code, orig_pkt);
 
-    if (pkt != NULL) {
-        gnrc_netapi_send(gnrc_ipv6_pid, pkt);
-    }
+    _send(pkt);
 }
 
 void gnrc_icmpv6_error_param_prob_send(uint8_t code, void *ptr,
@@ -156,9 +157,7 @@ void gnrc_icmpv6_error_param_prob_send(uint8_t code, void *ptr,
 {
     gnrc_pktsnip_t *pkt = _param_prob_build(code, ptr, orig_pkt);
 
-    if (pkt != NULL) {
-        gnrc_netapi_send(gnrc_ipv6_pid, pkt);
-    }
+    _send(pkt);
 }
 
 /** @} */