efi_loader: '.' and '..' are directories

'.' and '..' are directories. So when looking for capsule files it is
sufficient to check that the attribute EFI_FILE_DIRECTORY is not set. We
don't have to check for these special names.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c
index 0d5a7b6..d39d731 100644
--- a/lib/efi_loader/efi_capsule.c
+++ b/lib/efi_loader/efi_capsule.c
@@ -753,9 +753,7 @@
 		if (!tmp_size)
 			break;
 
-		if (!(dirent->attribute & EFI_FILE_DIRECTORY) &&
-		    u16_strcmp(dirent->file_name, L".") &&
-		    u16_strcmp(dirent->file_name, L".."))
+		if (!(dirent->attribute & EFI_FILE_DIRECTORY))
 			count++;
 	}