switch simple cases of fget_light to fdget

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/stat.c b/fs/stat.c
index 4078022..ee18fa1 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -57,13 +57,13 @@
 
 int vfs_fstat(unsigned int fd, struct kstat *stat)
 {
-	int fput_needed;
-	struct file *f = fget_raw_light(fd, &fput_needed);
+	struct fd f = fdget_raw(fd);
 	int error = -EBADF;
 
-	if (f) {
-		error = vfs_getattr(f->f_path.mnt, f->f_path.dentry, stat);
-		fput_light(f, fput_needed);
+	if (f.file) {
+		error = vfs_getattr(f.file->f_path.mnt, f.file->f_path.dentry,
+				    stat);
+		fdput(f);
 	}
 	return error;
 }