Adopt let else in more places

2022-02-19 00:48:49 +01:00
parent b8c56fa8c3
commit 2ef8af6619
132 changed files with 539 additions and 881 deletions
--- a/compiler/rustc_passes/src/liveness.rs
+++ b/compiler/rustc_passes/src/liveness.rs
@@ -1430,9 +1430,8 @@ impl<'tcx> Liveness<'_, 'tcx> {
    }

    fn warn_about_unused_upvars(&self, entry_ln: LiveNode) {
-        let closure_min_captures = match self.closure_min_captures {
-            None => return,
-            Some(closure_min_captures) => closure_min_captures,
+        let Some(closure_min_captures) = self.closure_min_captures else {
+            return;
        };

        // If closure_min_captures is Some(), upvars must be Some() too.