[Minor] cbref is initilised with -1 by default

diff --git a/src/lua/lua_tcp.c b/src/lua/lua_tcp.c
index 61a73acf856d62bfd2a45d70cabd40bed81ba5d9..ce91d78735cc03fdbfb71f54698cdca0702aef49 100644 (file)
--- a/src/lua/lua_tcp.c
+++ b/src/lua/lua_tcp.c
@@ -249,7 +249,7 @@ lua_tcp_shift_handler (struct lua_tcp_cbdata *cbd)
        }
 
        if (hdl->type == LUA_WANT_READ) {
-               if (hdl->h.r.cbref) {
+               if (hdl->h.r.cbref && hdl->h.r.cbref != -1) {
                        luaL_unref (cbd->task->cfg->lua_state, LUA_REGISTRYINDEX, hdl->h.r.cbref);
                }
 
@@ -258,7 +258,7 @@ lua_tcp_shift_handler (struct lua_tcp_cbdata *cbd)
                }
        }
        else {
-               if (hdl->h.w.cbref) {
+               if (hdl->h.w.cbref && hdl->h.w.cbref != -1) {
                        luaL_unref (cbd->task->cfg->lua_state, LUA_REGISTRYINDEX, hdl->h.w.cbref);
                }