fix compiler warning

diff --git a/src/mathed/InsetMathXArrow.cpp b/src/mathed/InsetMathXArrow.cpp
index c150a4454cf86f086671b0d8ef06e64958739600..cd36fe19814c0b9738344d12892b5faa90b94001 100644 (file)
--- a/src/mathed/InsetMathXArrow.cpp
+++ b/src/mathed/InsetMathXArrow.cpp
@@ -133,6 +133,7 @@ docstring map_latex_to(docstring latex, bool xml = false)
                std::string format = (xml) ? "XML" : "HTML";
                lyxerr << "mathmlize " << format << " conversion for '" << latex << "' not implemented" << endl;
                LASSERT(false, return from_ascii(dict["xrightarrow"]));
+               return docstring();
        }
 }