doclet/gtkdoc: @see, @link: Fix nullptr error on unresolved types

diff --git a/src/doclets/gtkdoc/commentconverter.vala b/src/doclets/gtkdoc/commentconverter.vala
index e53b8f56bb1923b0d22b4aaa6b00deb5ffd7a395..73798780ee87eb8f4f1932e0340ea2d414c99412 100644 (file)
--- a/src/doclets/gtkdoc/commentconverter.vala
+++ b/src/doclets/gtkdoc/commentconverter.vala
@@ -88,7 +88,11 @@ public class Gtkdoc.CommentConverter : ContentVisitor {
        }
 
        public override void visit_symbol_link (SymbolLink sl) {
-               current_builder.append (get_docbook_link (sl.symbol, is_dbus) ?? sl.label);
+               if (sl.symbol != null) {
+                       current_builder.append (get_docbook_link (sl.symbol, is_dbus) ?? sl.label);
+               } else {
+                       current_builder.append (sl.label);
+               }
        }
   
        public override void visit_list (Content.List list) {
@@ -242,7 +246,11 @@ public class Gtkdoc.CommentConverter : ContentVisitor {
                } else if (t is Taglets.See) {
                        var see = (Taglets.See)t;
                        var see_also = this.see_also; // vala bug
-                       see_also += get_docbook_link (see.symbol, is_dbus) ?? see.symbol_name;
+                       if (see.symbol != null) {
+                               see_also += get_docbook_link (see.symbol, is_dbus) ?? see.symbol_name;
+                       } else {
+                               see_also += see.symbol_name;
+                       }
                        this.see_also = see_also;
                } else if (t is Taglets.Link) {
                        ((Taglets.Link)t).produce_content().accept (this);