Use forward compatible `FxHashMap` initialization

diff --git a/src/librustc_mir/interpret/eval_context.rs b/src/librustc_mir/interpret/eval_context.rs
index 13b6fa44de2034f26ed5d0fe9d4c108ae2427ffe..cf5358a9896720365448dc3b7f741eb56c608926 100644 (file)
--- a/src/librustc_mir/interpret/eval_context.rs
+++ b/src/librustc_mir/interpret/eval_context.rs
@@ -213,7 +213,7 @@ pub fn new(
             param_env,
             memory: Memory::new(tcx, memory_data),
             stack: Vec::new(),
-            vtables: FxHashMap(),
+            vtables: FxHashMap::default(),
         }
     }