IllFormed(UnmatchedEnd) should be reported always because lone closed tags are not allowed even in HTML

Author: Mingun

src/reader/mod.rs

@@ -1740,22 +1740,15 @@ mod test {
                     );
                 }
 
+                /// Lone closing tags are not allowed, so testing it together with start tag
                 #[$test]
-                $($async)? fn start() {
-                    let mut reader = Reader::from_str("<tag>");
+                $($async)? fn start_and_end() {
+                    let mut reader = Reader::from_str("<tag></tag>");
 
                     assert_eq!(
                         reader.$read_event($buf) $(.$await)? .unwrap(),
                         Event::Start(BytesStart::new("tag"))
                     );
-                }
-
-                #[$test]
-                $($async)? fn end() {
-                    let mut reader = Reader::from_str("</tag>");
-                    // Because we expect invalid XML, do not check that
-                    // the end name paired with the start name
-                    reader.check_end_names(false);
 
                     assert_eq!(
                         reader.$read_event($buf) $(.$await)? .unwrap(),

src/reader/state.rs

@@ -170,15 +170,14 @@ impl ReaderState {
 
                 self.opened_buffer.truncate(start);
             }
-            None if self.check_end_names => {
+            None => {
                 // Report error at start of the end tag at `<` character
                 // +2 for `<` and `>`
                 self.offset -= buf.len() + 2;
                 return Err(Error::IllFormed(IllFormedError::UnmatchedEnd(
                     decoder.decode(name).unwrap_or_default().into_owned(),
                 )));
             }
-            None => {}
         }
 
         Ok(Event::End(BytesEnd::wrap(name.into())))