fix stackoverflow

fuzz/fuzz_targets/lex_parse.rs

@@ -1,6 +1,11 @@
 #![no_main]
 use libfuzzer_sys::fuzz_target;
 
-fuzz_target!(|data: &[u8]| {
-    // fuzzed code goes here
+fuzz_target!(|data: String| {
+    let lexer = script_lang::Lexer::lex(&data);
+    let tokens = lexer.collect::<Result<Vec<_>, _>>();
+
+    if let Ok(tokens) = tokens {
+        let _ast = script_lang::parse(tokens);
+    }
 });