[vala/0.50] codegen: Report error for unsupported symbol_reference of MemberInitializer

[Rico Tzschichholz <ricotz src gnome org>]

commit da881ea188e18f2b8b0b92c98ffd8b2d20c3690d
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Feb 16 22:42:00 2021 +0100

    codegen: Report error for unsupported symbol_reference of MemberInitializer

 codegen/valaccodebasemodule.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 157136c58..38313f8a5 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -5163,6 +5163,8 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                                        if (!p.set_accessor.value_type.value_owned && requires_destroy 
(init.initializer.target_value.value_type)) {
                                                ccode.add_expression (destroy_value 
(init.initializer.target_value));
                                        }
+                               } else {
+                                       Report.error (init.source_reference, "internal: Unsupported symbol");
                                }
                        }