[vala/0.54] vala: Replace and drop UnaryExpression.find_member_access()

[Rico Tzschichholz <ricotz src gnome org>]

commit 034a2954eab699988b94a8e248beb1a9a7e154cb
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Oct 23 15:27:12 2021 +0200

    vala: Replace and drop UnaryExpression.find_member_access()

 vala/valaunaryexpression.vala | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)
---
diff --git a/vala/valaunaryexpression.vala b/vala/valaunaryexpression.vala
index 80bee5540..a725456fa 100644
--- a/vala/valaunaryexpression.vala
+++ b/vala/valaunaryexpression.vala
@@ -128,14 +128,6 @@ public class Vala.UnaryExpression : Expression {
                return st.is_integer_type ();
        }
 
-       MemberAccess? find_member_access (Expression expr) {
-               if (expr is MemberAccess) {
-                       return (MemberAccess) expr;
-               }
-
-               return null;
-       }
-
        public override void get_error_types (Collection<DataType> collection, SourceReference? 
source_reference = null) {
                inner.get_error_types (collection, source_reference);
        }
@@ -211,8 +203,7 @@ public class Vala.UnaryExpression : Expression {
                                return false;
                        }
 
-                       var ma = find_member_access (inner);
-                       if (ma == null) {
+                       if (!(inner is MemberAccess)) {
                                error = true;
                                Report.error (source_reference, "Prefix operators not supported for this 
expression");
                                return false;