feat: implement format strings

src/compiler/fzl_token.c

@@ -30,7 +30,11 @@ fzl_token_t *fzl_mktoken(const fzl_toktype_t type, size_t line, size_t col,
 // Free allocated token
 void fzl_freetoken(fzl_token_t *tok)
 {
+  if (!tok)
+    return;
+
   if (tok->store_value)
     free(tok->value);
+
   free(tok);
 }