Backport from xs.

xs_html.h

@@ -209,7 +209,7 @@ void xs_html_render_f(xs_html *h, FILE *f)
 
         if (h->type == XS_HTML_SCTAG) {
             /* self-closing tags should not have subtags */
-            fprintf(f, "/>");
+            fprintf(f, "/>\n");
         }
         else {
             fprintf(f, ">");

xs_version.h

@@ -1 +1 @@
-/* ba85b6a3e2332fc51d12a5f9dc5ecbd5f5cc1555 2023-11-27T10:00:17+01:00 */
+/* 8994b1ef8501039ec97a388680ee361138e34554 2023-11-27T11:45:06+01:00 */