more clippy fixes

use is_empty() instead of len comparison (clippy::len_zero)
use if let instead of while let loop that never loops (clippy::never_loop)
remove redundant returns (clippy::needless_return)
remove redundant closures (clippy::redundant_closure)
use if let instead of match and wildcard pattern (clippy::single_match)
don't repeat field names redundantly (clippy::redundant_field_names)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/librustc_interface/passes.rs b/src/librustc_interface/passes.rs
index 7d066a31a07..e3fc4fa52fb 100644
--- a/src/librustc_interface/passes.rs
+++ b/src/librustc_interface/passes.rs
@@ -711,7 +711,7 @@ impl<'tcx> QueryContext<'tcx> {
     }
 
     pub fn print_stats(&mut self) {
-        self.enter(|tcx| ty::query::print_stats(tcx))
+        self.enter(ty::query::print_stats)
     }
 }