fix: 修复一个todo问题

tests/test_pe.rs

@@ -60,8 +60,9 @@ mod test {
     }
 
     #[test]
-    fn test_find_export_function(){
-        let find_function_str = ProcName::Named("test_def_add".to_string());
+    fn test_find_export_function() {
+        // let find_function_str = ProcName::Named("test_def_add".to_string());
+        let find_function_str = ProcName::Ordinal(2);
         // 1. 还是先映射
         use pe_parse::pe::ReadOnlyPE;
         let file = std::fs::OpenOptions::new()
@@ -70,6 +71,14 @@ mod test {
             .unwrap();
         let mmap = unsafe { Mmap::map(&file).unwrap() };
         let result_rva = mmap.get_export_function_rva(find_function_str).unwrap();
-        println!("Find Function RVA: {:#x}", result_rva);
+        match result_rva {
+            None => {
+                println!("Can't find the function");
+                return;
+            }
+            Some(rva) => {
+                println!("Find Function RVA: {:#x}", rva);
+            }
+        }
     }
 }