1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs
index 6329bcee4fa..a4e100973b6 100644
--- a/compiler/rustc_mir_build/src/build/matches/mod.rs
+++ b/compiler/rustc_mir_build/src/build/matches/mod.rs
@@ -264,7 +264,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
         // The set of places that we are creating fake borrows of. If there are
         // no match guards then we don't need any fake borrows, so don't track
         // them.
-        let mut fake_borrows = if match_has_guard { Some(FxHashSet::default()) } else { None };
+        let mut fake_borrows = match_has_guard.then(FxHashSet::default);
 
         let mut otherwise = None;