Avoid unneeded '&'s in let patterns.

lib/bforest/src/pool.rs

@@ -90,7 +90,7 @@ impl<F: Forest> NodePool<F> {
 
         // The root node can't be an inner node with just a single sub-tree. It should have been
         // pruned.
-        if let &NodeData::Inner { size, .. } = &self[node] {
+        if let NodeData::Inner { size, .. } = self[node] {
             assert!(size > 0, "Root must have more than one sub-tree");
         }
 

lib/codegen/src/ir/dfg.rs

@@ -156,10 +156,10 @@ pub struct Values<'a> {
 
 /// Check for non-values
 fn valid_valuedata(data: &ValueData) -> bool {
-    if let &ValueData::Alias {
+    if let ValueData::Alias {
         ty: types::INVALID,
         original,
-    } = data
+    } = *data
     {
         if original == Value::reserved_value() {
             return false;