Propagate the correct has_host value when parsing a file hostname

Author: o0Ignition0o

src/parser.rs

@@ -1043,14 +1043,20 @@ impl<'a> Parser<'a> {
         &mut self,
         input: Input<'i>,
     ) -> ParseResult<(bool, HostInternal, Input<'i>)> {
-        let (has_host, host_str, remaining) = Parser::file_host(input)?;
+        let has_host;
+        let (_, host_str, remaining) = Parser::file_host(input)?;
         let host = if host_str.is_empty() {
+            has_host = false;
             HostInternal::None
         } else {
             match Host::parse(&host_str)? {
-                Host::Domain(ref d) if d == "localhost" => HostInternal::None,
+                Host::Domain(ref d) if d == "localhost" => {
+                    has_host = false;
+                    HostInternal::None
+                }
                 host => {
                     write!(&mut self.serialization, "{}", host).unwrap();
+                    has_host = true;
                     host.into()
                 }
             }