Fixup 39c7199a: the code did not do what it was supposed to

(cherry picked from commit 92ef555abde86466b7ca3c3401ab8132258fc497)

diff --git a/src/insets/InsetLayout.h b/src/insets/InsetLayout.h
index 7593d844d52637af1b3da7406199316f99be296c..ffa0380f17de46825963f44bf13d1fdf2bd1b442 100644 (file)
--- a/src/insets/InsetLayout.h
+++ b/src/insets/InsetLayout.h
@@ -200,7 +200,7 @@ public:
        ///
        bool docbookrenderasimage() const { return docbookrenderasimage_; }
        ///
-       std::set<std::string> required() const & { return required_; }
+       std::set<std::string> const & required() const { return required_; }
        ///
        bool isMultiPar() const { return multipar_; }
        ///