Fix linting (#2164)

Makefile

@@ -23,7 +23,7 @@ check:
 	cargo check --workspace
 	cargo fmt --all --check
 	cargo fmt --all --check -- ./lib/tests/**/*.rs ./lib/src/kvs/tests/*.rs
-	cargo clippy --no-deps -- -D warnings
+	cargo clippy --all-targets --all-features -- -D warnings
 
 .PHONY: clean
 clean:

lib/src/idx/planner/tree.rs

@@ -90,11 +90,9 @@ impl<'a> TreeBuilder<'a> {
 		match e {
 			Expression::Unary {
 				..
-			} => {
-				return Err(Error::FeatureNotYetImplemented {
-					feature: "unary expressions in index",
-				});
-			}
+			} => Err(Error::FeatureNotYetImplemented {
+				feature: "unary expressions in index",
+			}),
 			Expression::Binary {
 				l,
 				o,