Also initialize Stat to zero in implementation of Resource

I didn't notice there were two copies of this code

mount/redox/resource.rs

@@ -199,12 +199,15 @@ impl Resource for FileResource {
     fn stat(&self, stat: &mut Stat, fs: &mut FileSystem) -> Result<usize> {
         let node = fs.node(self.block)?;
 
-        stat.st_dev = 0; //TODO
-        stat.st_ino = node.0;
-        stat.st_mode = node.1.mode;
-        stat.st_uid = node.1.uid;
-        stat.st_gid = node.1.gid;
-        stat.st_size = fs.node_len(self.block)?;
+        *stat = Stat {
+            st_dev: 0, // TODO
+            st_ino: node.0,
+            st_mode: node.1.mode,
+            st_uid: node.1.uid,
+            st_gid: node.1.gid,
+            st_size: fs.node_len(self.block)?,
+            ..Default::default()
+        };
 
         Ok(0)
     }