fix clippy::unnecessary_mut_passed: function arg is not required to be mutable

matthiaskrgr · matthiaskrgr · commit f6b18573531b · 2020-08-07T22:47:32.000+02:00
diff --git a/src/librustc_metadata/rmeta/encoder.rs b/src/librustc_metadata/rmeta/encoder.rs
@@ -162,7 +162,7 @@ impl<'a, 'tcx> SpecializedEncoder<ExpnId> for EncodeContext<'a, 'tcx> {
     fn specialized_encode(&mut self, expn: &ExpnId) -> Result<(), Self::Error> {
         rustc_span::hygiene::raw_encode_expn_id(
             *expn,
-            &mut self.hygiene_ctxt,
+            &self.hygiene_ctxt,
             ExpnDataEncodeMode::Metadata,
             self,
         )

Original file line number	Diff line number	Diff line change
`@@ -162,7 +162,7 @@ impl<'a, 'tcx> SpecializedEncoder<ExpnId> for EncodeContext<'a, 'tcx> {`
`162`	`162`	`fn specialized_encode(&mut self, expn: &ExpnId) -> Result<(), Self::Error> {`
`163`	`163`	`rustc_span::hygiene::raw_encode_expn_id(`
`164`	`164`	`*expn,`
`165`		`- &mut self.hygiene_ctxt,`
	`165`	`+ &self.hygiene_ctxt,`
`166`	`166`	`ExpnDataEncodeMode::Metadata,`
`167`	`167`	`self,`
`168`	`168`	`)`