[Minor] Allow to pre-allocate lua_text

diff --git a/src/lua/lua_text.c b/src/lua/lua_text.c
index e23eed8cbb2dfe3400170a42b67fcec5524c57e8..2586b3302917dd3ea7be73bb35acfc8687b01769 100644 (file)
--- a/src/lua/lua_text.c
+++ b/src/lua/lua_text.c
@@ -198,7 +198,11 @@ lua_new_text (lua_State *L, const gchar *start, gsize len, gboolean own)
 
                if (len > 0) {
                        storage = g_malloc (len);
-                       memcpy (storage, start, len);
+
+                       if (start != NULL) {
+                               memcpy (storage, start, len);
+                       }
+
                        t->start = storage;
                        t->flags = RSPAMD_TEXT_FLAG_OWN;
                }