Fix single_match lint being emitted when it should not

tests/ui/single_match.fixed

@@ -17,7 +17,13 @@ fn single_match() {
     };
 
     let x = Some(1u8);
-    if let Some(y) = x { println!("{:?}", y) }
+    match x {
+        // Note the missing block braces.
+        // We suggest `if let Some(y) = x { .. }` because the macro
+        // is expanded before we can do anything.
+        Some(y) => println!("{:?}", y),
+        _ => (),
+    }
 
     let z = (1u8, 1u8);
     if let (2..=3, 7..=9) = z { dummy() };
@@ -318,5 +324,25 @@ fn irrefutable_match() {
 
     
 
-    println!()
+    println!();
+
+    let mut x = vec![1i8];
+
+    // Should not lint.
+    match x.pop() {
+        // bla
+        Some(u) => println!("{u}"),
+        // more comments!
+        None => {},
+    }
+    // Should not lint.
+    match x.pop() {
+        // bla
+        Some(u) => {
+            // bla
+            println!("{u}");
+        },
+        // bla
+        None => {},
+    }
 }

tests/ui/single_match.rs

@@ -401,4 +401,24 @@ fn irrefutable_match() {
         CONST_I32 => println!(),
         _ => {},
     }
+
+    let mut x = vec![1i8];
+
+    // Should not lint.
+    match x.pop() {
+        // bla
+        Some(u) => println!("{u}"),
+        // more comments!
+        None => {},
+    }
+    // Should not lint.
+    match x.pop() {
+        // bla
+        Some(u) => {
+            // bla
+            println!("{u}");
+        },
+        // bla
+        None => {},
+    }
 }

tests/ui/single_match.stderr

@@ -18,18 +18,6 @@ LL +         println!("{:?}", y);
 LL ~     };
    |
 
-error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
-  --> tests/ui/single_match.rs:23:5
-   |
-LL | /     match x {
-LL | |         // Note the missing block braces.
-LL | |         // We suggest `if let Some(y) = x { .. }` because the macro
-LL | |         // is expanded before we can do anything.
-LL | |         Some(y) => println!("{:?}", y),
-LL | |         _ => (),
-LL | |     }
-   | |_____^ help: try: `if let Some(y) = x { println!("{:?}", y) }`
-
 error: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
   --> tests/ui/single_match.rs:32:5
    |
@@ -279,7 +267,7 @@ LL | /     match CONST_I32 {
 LL | |         CONST_I32 => println!(),
 LL | |         _ => {},
 LL | |     }
-   | |_____^ help: try: `println!()`
+   | |_____^ help: try: `println!();`
 
-error: aborting due to 26 previous errors
+error: aborting due to 25 previous errors