nitx: do not crash if nmodule.n_moduledecl is null

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/nitx.nit b/src/nitx.nit
index 532fb8a..8915412 100644 (file)
--- a/src/nitx.nit
+++ b/src/nitx.nit
@@ -373,7 +373,7 @@ redef class MModule
        redef fun preview(index, pager) do
                if index.mbuilder.mmodule2nmodule.has_key(self) then
                        var node = index.mbuilder.mmodule2nmodule[self]
-                       if not node.n_moduledecl.n_doc == null and not node.n_moduledecl.n_doc.short_comment.is_empty then
+                       if node.n_moduledecl != null and not node.n_moduledecl.n_doc == null and not node.n_moduledecl.n_doc.short_comment.is_empty then
                                pager.add(node.n_moduledecl.n_doc.short_comment.green)
                        end
                end
@@ -384,7 +384,7 @@ redef class MModule
        redef fun content(index, pager) do
                if index.mbuilder.mmodule2nmodule.has_key(self) then
                        var node = index.mbuilder.mmodule2nmodule[self]
-                       if not node.n_moduledecl.n_doc == null and not node.n_moduledecl.n_doc.comment.is_empty then
+                       if node.n_moduledecl != null and not node.n_moduledecl.n_doc == null and not node.n_moduledecl.n_doc.comment.is_empty then
                                for comment in node.n_moduledecl.n_doc.comment do pager.add(comment.green)
                        end
                end