fix. identifiers/types

Author: juliusl

library/std/src/os/windows/fs.rs

@@ -508,7 +508,7 @@ impl MetadataExt for Metadata {
         self.as_inner().file_index()
     }
     fn change_time(&self) -> Option<u64> {
-        self.as_inner().change_time()
+        self.as_inner().changed_u64()
     }
 }
 

library/std/src/sys/windows/fs.rs

@@ -963,7 +963,7 @@ impl FileAttr {
     }
 
     pub fn changed_u64(&self) -> Option<u64> {
-        self.change_time.map(|c| to_u64(c))
+        self.change_time.as_ref().map(|c| to_u64(c))
     }
 
     pub fn volume_serial_number(&self) -> Option<u32> {