[vala/wip/tintou/source-file-remove-code-context] vala: Ensure that the CodeContext has no reference to the node before removing it

[Corentin Noël <corentinnoel src gnome org>]

commit f93801cbbc1bfeaffbf6edd94773e93033e2a69e
Author: Corentin Noël <corentin noel collabora com>
Date:   Fri Mar 15 15:17:03 2019 +0100

    vala: Ensure that the CodeContext has no reference to the node before removing it

 vala/valasourcefile.vala | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/vala/valasourcefile.vala b/vala/valasourcefile.vala
index 35eaf5f26..90b2569ea 100644
--- a/vala/valasourcefile.vala
+++ b/vala/valasourcefile.vala
@@ -197,6 +197,12 @@ public class Vala.SourceFile {
        }
 
        public void remove_node (CodeNode node) {
+               var code_context = CodeContext.get ()
+               unowned Vala.Method? entry_point = code_context.entry_point;
+               if (entry_point != null && entry_point.source_reference == node) {
+                       code_context.entry_point = null;
+               }
+
                nodes.remove (node);
        }