add some const.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18522 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/insets/InsetListingsParams.cpp b/src/insets/InsetListingsParams.cpp
index 5d10ac6e075f2f050fa9dcae374087f80bceb90d..b66fb4add804f99d1af45da8157159b674654fef 100644 (file)
--- a/src/insets/InsetListingsParams.cpp
+++ b/src/insets/InsetListingsParams.cpp
@@ -112,18 +112,18 @@ char const * allowed_languages =
        "[plain]TeX\n[primitive]TeX\nVBScript\nVerilog\nVHDL\n[AMS]VHDL\nVRML\n"
        "[97]VRML\nXML\nXSLT";
 
-docstring empty_hint;
-docstring style_hint = _("Use \\footnotesize, \\small, \\itshape, "
+docstring const empty_hint;
+docstring const style_hint = _("Use \\footnotesize, \\small, \\itshape, "
                          "\\ttfamily or something like that");
 
-docstring frame_hint = _("none, leftline, topline, bottomline, lines, "
+docstring const frame_hint = _("none, leftline, topline, bottomline, lines, "
                          "single, shadowbox or subset of trblTRBL");
 
-docstring frameround_hint = _("Enter four letters (either t = round "
+docstring const frameround_hint = _("Enter four letters (either t = round "
                               "or f = square) for top right, bottom "
                               "right, bottom left and top left corner.");
 
-docstring color_hint = _("Enter something like \\color{white}");
+docstring const color_hint = _("Enter something like \\color{white}");
 
 
 /// options copied from page 26 of listings manual