[vala/0.48] codegen: Use ErrorType.error_domain if possible

[Rico Tzschichholz <ricotz src gnome org>]

commit f18dc64671ea706a4ec99c60572986225d3be6d2
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Oct 23 15:27:12 2021 +0200

    codegen: Use ErrorType.error_domain if possible

 codegen/valagerrormodule.vala | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/codegen/valagerrormodule.vala b/codegen/valagerrormodule.vala
index 06b4638b6..1bd935b3c 100644
--- a/codegen/valagerrormodule.vala
+++ b/codegen/valagerrormodule.vala
@@ -227,13 +227,13 @@ public class Vala.GErrorModule : CCodeDelegateModule {
                                                ccode.add_goto (clause.clabel_name);
                                                break;
                                        } else {
-                                               var catch_type = clause.error_type as ErrorType;
+                                               unowned ErrorType catch_type = (ErrorType) clause.error_type;
 
                                                if (catch_type.error_code != null) {
                                                        /* catch clause specifies a specific error code */
                                                        var error_match = new CCodeFunctionCall (new 
CCodeIdentifier ("g_error_matches"));
                                                        error_match.add_argument (get_inner_error_cexpression 
());
-                                                       error_match.add_argument (new CCodeIdentifier 
(get_ccode_upper_case_name (catch_type.type_symbol)));
+                                                       error_match.add_argument (new CCodeIdentifier 
(get_ccode_upper_case_name (catch_type.error_domain)));
                                                        error_match.add_argument (new CCodeIdentifier 
(get_ccode_name (catch_type.error_code)));
 
                                                        ccode.open_if (error_match);
@@ -241,7 +241,7 @@ public class Vala.GErrorModule : CCodeDelegateModule {
                                                        /* catch clause specifies a full error domain */
                                                        var ccond = new CCodeBinaryExpression 
(CCodeBinaryOperator.EQUALITY,
                                                                        new CCodeMemberAccess.pointer 
(get_inner_error_cexpression (), "domain"), new CCodeIdentifier
-                                                                       (get_ccode_upper_case_name 
(clause.error_type.type_symbol)));
+                                                                       (get_ccode_upper_case_name 
(catch_type.error_domain)));
 
                                                        ccode.open_if (ccond);
                                                }
@@ -283,7 +283,7 @@ public class Vala.GErrorModule : CCodeDelegateModule {
 
                                // Check the allowed error domains to propagate
                                var domain_check = new CCodeBinaryExpression (CCodeBinaryOperator.EQUALITY, 
new CCodeMemberAccess.pointer
-                                       (get_inner_error_cexpression (), "domain"), new CCodeIdentifier 
(get_ccode_upper_case_name (error_type.type_symbol)));
+                                       (get_inner_error_cexpression (), "domain"), new CCodeIdentifier 
(get_ccode_upper_case_name (((ErrorType) error_type).error_domain)));
                                if (ccond == null) {
                                        ccond = domain_check;
                                } else {