Merge #3220

3220: Fix clippy warnings, update Cargo.toml versions r=matklad a=SomeoneToIgnore

In the `cargo xtask lint` ouptut, there were two interesting Clippy warnings that might be interesting to investigate further:

* warning: this argument (4 byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte)

* warning: large size difference between variants

Co-authored-by: Kirill Bulatov <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_mbe/src/subtree_source.rs b/crates/ra_mbe/src/subtree_source.rs
index c9f42b3dd..eb8b79e9a 100644
--- a/crates/ra_mbe/src/subtree_source.rs
+++ b/crates/ra_mbe/src/subtree_source.rs
@@ -124,7 +124,7 @@ fn convert_delim(d: Option<tt::DelimiterKind>, closing: bool) -> TtToken {
 
     let idx = closing as usize;
     let kind = kinds[idx];
-    let text = if texts.len() > 0 { &texts[idx..texts.len() - (1 - idx)] } else { "" };
+    let text = if !texts.is_empty() { &texts[idx..texts.len() - (1 - idx)] } else { "" };
     TtToken { kind, is_joint_to_next: false, text: SmolStr::new(text) }
 }