vala: VoidType is actually compatible with itself

See https://gitlab.gnome.org/GNOME/vala/issues/878

diff --git a/vala/valavoidtype.vala b/vala/valavoidtype.vala
index 9035c25c8fc9c1a99ff38faebca3b46e534c8dff..1cb6f2ea40b79f6477a74344a47e98c3510afb04 100644 (file)
--- a/vala/valavoidtype.vala
+++ b/vala/valavoidtype.vala
@@ -34,6 +34,10 @@ public class Vala.VoidType : DataType {
                return (type2 is VoidType);
        }
 
+       public override bool compatible (DataType type2) {
+               return (type2 is VoidType);
+       }
+
        public override string to_qualified_string (Scope? scope) {
                return "void";
        }