fix new clippy lint (#132)

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

crates/benchmarks/benches/execute.rs

@@ -46,7 +46,7 @@ fn group<'error, M>(c: &'error mut Criterion<M>, group_name: &str) -> BenchmarkG
 where
     M: Measurement,
 {
-    return c.benchmark_group(group_name);
+    c.benchmark_group(group_name)
 }
 
 fn bench_baseline(c: &mut Criterion) {

crates/llvm-context/src/polkavm/context/evmla_data.rs

@@ -13,7 +13,7 @@ pub struct EVMLAData<'ctx> {
     pub stack: Vec<Argument<'ctx>>,
 }
 
-impl<'ctx> EVMLAData<'ctx> {
+impl EVMLAData<'_> {
     /// The default stack size.
     pub const DEFAULT_STACK_SIZE: usize = 64;