[Minor] Fix fuzzy lua callback when there are no shingles

diff --git a/src/fuzzy_storage.c b/src/fuzzy_storage.c
index 919ea2118bea449ca48c868db85bfb6236ba5ec3..7ed34ef69575b3f5e971f2ef1afe4d4ce07fbb81 100644 (file)
--- a/src/fuzzy_storage.c
+++ b/src/fuzzy_storage.c
@@ -1305,7 +1305,7 @@ rspamd_fuzzy_check_callback(struct rspamd_fuzzy_reply *result, void *ud)
                {
                        /* Start lua post handler */
                        lua_State *L = session->ctx->cfg->lua_state;
-                       int err_idx, ret, nargs = 9;
+                       int err_idx, ret, nargs = 10;
 
                        lua_pushcfunction(L, &rspamd_lua_traceback);
                        err_idx = lua_gettop(L);
@@ -1339,7 +1339,8 @@ rspamd_fuzzy_check_callback(struct rspamd_fuzzy_reply *result, void *ud)
                        /* We push shingles merely for commands that modify content to avoid extra work */
                        if (is_shingle && cmd->cmd != FUZZY_CHECK) {
                                lua_newshingle(L, &session->cmd.sgl);
-                               nargs++;
+                       } else {
+                               lua_pushnil(L);
                        }
 
                        if ((ret = lua_pcall(L, nargs, LUA_MULTRET, err_idx)) != 0) {
@@ -1505,7 +1506,7 @@ rspamd_fuzzy_process_command(struct fuzzy_session *session)
                {
                        /* Start lua pre handler */
                        lua_State *L = session->ctx->cfg->lua_state;
-                       int err_idx, ret, nargs = 7;
+                       int err_idx, ret, nargs = 8;
 
                        lua_pushcfunction(L, &rspamd_lua_traceback);
                        err_idx = lua_gettop(L);
@@ -1527,7 +1528,8 @@ rspamd_fuzzy_process_command(struct fuzzy_session *session)
                        /* We push shingles merely for commands that modify content to avoid extra work */
                        if (is_shingle && cmd->cmd != FUZZY_CHECK) {
                                lua_newshingle(L, &session->cmd.sgl);
-                               nargs++;
+                       } else {
+                               lua_pushnil(L);
                        }
 
                        /* Flag and value */