[LyX/master] Fix output of subentry with sortkey

[Juergen Spitzmueller]

commit 5a53a5f608701c08e738726ab3156b0c3e61b6e7
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Nov 1 11:55:57 2022 +0100

    Fix output of subentry with sortkey
---
 src/insets/InsetIndexMacro.cpp |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/insets/InsetIndexMacro.cpp b/src/insets/InsetIndexMacro.cpp
index e4dc167..80ba766 100644
--- a/src/insets/InsetIndexMacro.cpp
+++ b/src/insets/InsetIndexMacro.cpp
@@ -159,6 +159,7 @@ void InsetIndexMacro::getLatex(otexstream & os, OutputParams const & runparams)
 		if (hasSortKey()) {
 			getSortkey(os, runparams);
 			os << "@";
+			InsetText::latex(os, runparams);
 		} else {
 			odocstringstream ourlatex;
 			otexstream ots(ourlatex);