use skynet_error for log

service-src/service_client.c

@@ -41,6 +41,8 @@ _cb(struct skynet_context * context, void * ud, int type, int session, uint32_t
 int
 client_init(struct client *c, struct skynet_context *ctx, const char * args) {
 	int id = 0;
+	if (args == NULL)
+		return 1;
 	sscanf(args, "%d",&id);
 	c->id = id;
 	skynet_callback(ctx, c, _cb);

service-src/service_gate.c

@@ -330,6 +330,8 @@ start_listen(struct gate *g, char * listen_addr) {
 
 int
 gate_init(struct gate *g , struct skynet_context * ctx, char * parm) {
+	if (parm == NULL)
+		return 1;
 	int max = 0;
 	int buffer = 0;
 	int sz = strlen(parm)+1;