Bump html5gum from 0.4.0 to 0.5.1 (#658)

* Bump html5gum from 0.4.0 to 0.5.1

Bumps [html5gum](https://github.com/untitaker/html5gum) from 0.4.0 to 0.5.1.
- [Release notes](https://github.com/untitaker/html5gum/releases)
- [Commits](https://github.com/untitaker/html5gum/compare/0.4.0...0.5.1)

---
updated-dependencies:
- dependency-name: html5gum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update html5gum

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthias <matthias-endler@gmx.net>

Cargo.lock

@@ -1394,9 +1394,9 @@ dependencies = [
 
 [[package]]
 name = "html5gum"
-version = "0.4.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dad48b66db55322add2819ae1d7bda0c32f3415269a08330679dbc8b0afeb30"
+checksum = "0e57347b3219b14dab25d1c10c1f29dfd93eb31f87060c79cd78c2634e7b594c"
 dependencies = [
  "jetscii",
 ]

lychee-lib/Cargo.toml

@@ -49,7 +49,7 @@ thiserror = "1.0.31"
 futures = "0.3.21"
 lazy_static = "1.4.0"
 html5ever = "0.26.0"
-html5gum = "0.4.0"
+html5gum = "0.5.1"
 octocrab = "0.16.0"
 ip_network = "0.4.1"
 secrecy = "0.8.0"

lychee-lib/src/extract/html5gum.rs

@@ -1,4 +1,4 @@
-use html5gum::{Emitter, Error, Tokenizer};
+use html5gum::{Emitter, Error, State, Tokenizer};
 
 use super::is_verbatim_elem;
 use super::plaintext::extract_plaintext;
@@ -178,14 +178,24 @@ impl Emitter for &mut LinkExtractor {
 
     fn init_end_tag(&mut self) {
         self.init_start_tag();
+        self.current_element_is_closing = true;
     }
 
     fn init_comment(&mut self) {
         self.flush_current_characters();
     }
 
-    fn emit_current_tag(&mut self) {
+    fn emit_current_tag(&mut self) -> Option<State> {
+        let next_state = if self.current_element_is_closing {
+            None
+        } else {
+            self.last_start_element.clear();
+            self.last_start_element.extend(&self.current_element_name);
+            html5gum::naive_next_state(&self.current_element_name)
+        };
+
         self.flush_old_attribute();
+        next_state
     }
 
     fn emit_current_doctype(&mut self) {}