Auto merge of #3518 - sinkuu:redundant_clone_tw, r=phansch

Lint redundant clone of fields

Makes `redundant_clone` warn on unnecessary `foo.field.clone()` sometimes (it can detect an unnecessary clone only if the base of projection, `foo` in this case, is not used at all after that). This is enough for cases like `returns_tuple().0.clone()`.

diff --cc clippy_lints/src/utils/mod.rs
Simple merge