bugfix: add nginx version condition for privileged agent connections. (#256)

Author: wangyao

src/ngx_stream_lua_worker.c

@@ -105,8 +105,13 @@ ngx_stream_lua_ffi_get_process_type(void)
 }
 
 
+#if defined(nginx_version) && nginx_version >= 1019003
 int
 ngx_stream_lua_ffi_enable_privileged_agent(char **err, unsigned int connections)
+#else
+int
+ngx_stream_lua_ffi_enable_privileged_agent(char **err)
+#endif
 {
 #ifdef HAVE_PRIVILEGED_PROCESS_PATCH
     ngx_core_conf_t   *ccf;
@@ -115,7 +120,9 @@ ngx_stream_lua_ffi_enable_privileged_agent(char **err, unsigned int connections)
                                            ngx_core_module);
 
     ccf->privileged_agent = 1;
+#if defined(nginx_version) && nginx_version >= 1019003
     ccf->privileged_agent_connections = connections;
+#endif
 
     return NGX_OK;