Remove an unnecessary local variable.

nnethercote · nnethercote · commit 76916d7a4b94 · 2019-12-13T08:36:25.000+11:00
diff --git a/src/librustc_data_structures/obligation_forest/mod.rs b/src/librustc_data_structures/obligation_forest/mod.rs
@@ -451,9 +451,8 @@ impl<O: ForestObligation> ObligationForest<O> {
                 index += 1;
                 continue;
             }
-            let result = processor.process_obligation(&mut node.obligation);
 
-            match result {
+            match processor.process_obligation(&mut node.obligation) {
                 ProcessResult::Unchanged => {
                     // No change in state.
                 }

Original file line number	Diff line number	Diff line change
`@@ -451,9 +451,8 @@ impl<O: ForestObligation> ObligationForest<O> {`
`451`	`451`	`index += 1;`
`452`	`452`	`continue;`
`453`	`453`	`}`
`454`		`- let result = processor.process_obligation(&mut node.obligation);`
`455`	`454`
`456`		`- match result {`
	`455`	`+ match processor.process_obligation(&mut node.obligation) {`
`457`	`456`	`ProcessResult::Unchanged => {`
`458`	`457`	`// No change in state.`
`459`	`458`	`}`