Use if let instead of match when only matching a single variant (clippy::single_match)

Makes code more compact and reduces nestig.

1 files changed, 16 insertions, 20 deletions

diff --git a/src/librustc_mir/dataflow/framework/graphviz.rs b/src/librustc_mir/dataflow/framework/graphviz.rs
index a85c428d3bf..bdd41121359 100644
--- a/src/librustc_mir/dataflow/framework/graphviz.rs
+++ b/src/librustc_mir/dataflow/framework/graphviz.rs
@@ -229,26 +229,22 @@ where
         }
 
         // Write any changes caused by terminator-specific effects
-        match terminator.kind {
-            mir::TerminatorKind::Call { destination: Some(_), .. } => {
-                let num_state_columns = self.num_state_columns();
-                self.write_row(w, "", "(on successful return)", |this, w, fmt| {
-                    write!(
-                        w,
-                        r#"<td balign="left" colspan="{colspan}" {fmt} align="left">"#,
-                        colspan = num_state_columns,
-                        fmt = fmt,
-                    )?;
-
-                    let state_on_unwind = this.results.get().clone();
-                    this.results.seek_after_assume_success(terminator_loc);
-                    write_diff(w, this.results.analysis(), &state_on_unwind, this.results.get())?;
-
-                    write!(w, "</td>")
-                })?;
-            }
-
-            _ => {}
+        if let mir::TerminatorKind::Call { destination: Some(_), .. } = terminator.kind {
+            let num_state_columns = self.num_state_columns();
+            self.write_row(w, "", "(on successful return)", |this, w, fmt| {
+                write!(
+                    w,
+                    r#"<td balign="left" colspan="{colspan}" {fmt} align="left">"#,
+                    colspan = num_state_columns,
+                    fmt = fmt,
+                )?;
+
+                let state_on_unwind = this.results.get().clone();
+                this.results.seek_after_assume_success(terminator_loc);
+                write_diff(w, this.results.analysis(), &state_on_unwind, this.results.get())?;
+
+                write!(w, "</td>")
+            })?;
         };
 
         write!(w, "</table>")