efi_loader: use u16* for UTF16 strings

We should be consistent in the types that we use to store Unicode strings.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index beb4fba..128cb0a 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -563,7 +563,7 @@
 		if (fh->isdir)
 			info->attribute |= EFI_FILE_DIRECTORY;
 
-		ascii2unicode((u16 *)info->file_name, filename);
+		ascii2unicode(info->file_name, filename);
 	} else if (!guidcmp(info_type, &efi_file_system_info_guid)) {
 		struct efi_file_system_info *info = buffer;
 		disk_partition_t part;