Auto merge of #7093 - Jarcho:single_match_fp, r=llogiq

Fix `single_match`

fixes: #7038
changelog: Don't suggest an equality check for types which don't implement `PartialEq` in `single_match`

tests/ui/single_match.rs

@@ -135,6 +135,14 @@ fn if_suggestion() {
         Bar::A => println!(),
         _ => (),
     }
+
+    // issue #7038
+    struct X;
+    let x = Some(X);
+    match x {
+        None => println!(),
+        _ => (),
+    };
 }
 
 macro_rules! single_match {

tests/ui/single_match.stderr

@@ -119,5 +119,14 @@ LL | |         _ => (),
 LL | |     }
    | |_____^ help: try this: `if let Bar::A = x { println!() }`
 
-error: aborting due to 12 previous errors
+error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
+  --> $DIR/single_match.rs:142:5
+   |
+LL | /     match x {
+LL | |         None => println!(),
+LL | |         _ => (),
+LL | |     };
+   | |_____^ help: try this: `if let None = x { println!() }`
+
+error: aborting due to 13 previous errors