storage/Composite: avoid setting the error twice

If an error has already been set by f.directory->storage->GetInfo(), don't set it again.

storage/Composite: avoid setting the error twice
ee026386 · Max Kellermann · 49c04ccf · ee026386
Commit ee026386 authored Oct 27, 2016 by Max Kellermann
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CompositeStorage.cxx src/storage/CompositeStorage.cxx +2 -1

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--- a/src/storage/CompositeStorage.cxx
+++ b/src/storage/CompositeStorage.cxx
@@ -286,7 +286,8 @@ CompositeStorage::GetInfo(const char *uri, bool follow, FileInfo &info,
 		return true;
 	}

-	error.Set(composite_domain, "No such directory");
+	if (!error.IsDefined())
+		error.Set(composite_domain, "No such directory");
 	return false;
 }