Don't create a tag element if there is no style to apply

Author: GuillaumeGomez

crates/anstyle-svg/src/lib.rs

@@ -512,18 +512,15 @@ fn write_fg_span(buffer: &mut String, span: SpanKind, element: &adapter::Element
                 // No need to create an element if there is no class or href.
                 write!(buffer, "{fragment}").unwrap();
             }
-            write!(buffer, r#"<span"#).unwrap();
+            write!(buffer, "<tspan").unwrap();
             write_classes(buffer, classes);
-            write!(buffer, r#">"#).unwrap();
+            buffer.write_str(">").unwrap();
             if let Some(hyperlink) = &element.url {
-                write!(buffer, r#"<a href="{hyperlink}">"#).unwrap();
-                need_closing_a = true;
-            }
-            write!(buffer, "{fragment}").unwrap();
-            if need_closing_a {
-                write!(buffer, r#"</a>"#).unwrap();
+                write!(buffer, r#"<a href="{hyperlink}">{fragment}</a>"#).unwrap();
+            } else {
+                write!(buffer, "{fragment}").unwrap();
             }
-            write!(buffer, r#"</span>"#).unwrap();
+            write!(buffer, "</tspan>").unwrap();
         }
         SpanKind::Tspan => {
             write!(buffer, r#"<tspan"#).unwrap();