refactor: use cstr_to_string

Author: nickysn

gems/codetracer-ruby-recorder/ext/native_tracer/src/lib.rs

@@ -609,8 +609,10 @@ unsafe extern "C" fn initialize(self_val: VALUE, out_dir: VALUE, format: VALUE)
     let slice = std::slice::from_raw_parts(ptr, len);
 
     let fmt = if !NIL_P(format) && RB_SYMBOL_P(format) {
-        let id = rb_sym2id(format);
-        match CStr::from_ptr(rb_id2name(id)).to_str().unwrap_or("") {
+        match cstr_to_string(rb_id2name(rb_sym2id(format)))
+            .unwrap_or_default()
+            .as_str()
+        {
             "binaryv0" => runtime_tracing::TraceEventsFileFormat::BinaryV0,
             "binary" | "bin" => runtime_tracing::TraceEventsFileFormat::Binary,
             "json" => runtime_tracing::TraceEventsFileFormat::Json,