[Fix] Fix plugins callbacks in webui

src/controller.c

 		return 0;
 	}
 
-	/* Callback */
-	lua_rawgeti (L, LUA_REGISTRYINDEX, cbd->handler->idx);
 	task = rspamd_task_new (session->ctx->worker, session->cfg);
 
 	task->resolver = ctx->resolver;
 		}
 	}
 
+	/* Callback */
+	lua_rawgeti (L, LUA_REGISTRYINDEX, cbd->handler->idx);
+
 	ptask = lua_newuserdata (L, sizeof (*ptask));
 	rspamd_lua_setclass (L, "rspamd{task}", -1);
 	*ptask = task;
 static void
 luaopen_controller (lua_State * L)
 {
-	rspamd_lua_new_class (L, "rspamd{url}", lua_csessionlib_m);
+	rspamd_lua_new_class (L, "rspamd{csession}", lua_csessionlib_m);
 	lua_pop (L, 1);
 }