Fix c++ compiler warnings

Bug fix for previous commit

diff --git a/src/rcfile.cc b/src/rcfile.cc
index 35905c8..22ed00e 100644 (file)
--- a/src/rcfile.cc
+++ b/src/rcfile.cc
@@ -225,7 +225,7 @@ gboolean read_int_option_clamp(const gchar *option, const gchar *label, const gc
        return ret;
 }
 
-void write_int_unit_option(GString *str, gint UNUSED(indent), gchar *label, gint n, gint subunits)
+void write_int_unit_option(GString *str, gint UNUSED(indent), const gchar *label, gint n, gint subunits)
 {
        gint l, r;