[range.dangling] Index borrowed_iterator_t and borrowed_subrange_t

Author: frederick-vs-ja

source/ranges.tex

@@ -2298,6 +2298,8 @@
 model \libconcept{borrowed_range}.
 \end{example}
 
+\indexlibraryglobal{borrowed_iterator_t}%
+\indexlibraryglobal{borrowed_subrange_t}%
 \pnum
 For a type \tcode{R} that models \libconcept{range}:
 \begin{itemize}