Fix access to top level delegated property from another property

#KT-5612 Fixed

compiler/backend/src/org/jetbrains/jet/codegen/PackagePartCodegen.java

@@ -55,6 +55,8 @@ public class PackagePartCodegen extends MemberCodegen<JetFile> {
                       ArrayUtil.EMPTY_STRING_ARRAY
         );
         v.visitSource(element.getName(), null);
+
+        generatePropertyMetadataArrayFieldIfNeeded(packagePartType);
     }
 
     @Override
@@ -75,11 +77,6 @@ public class PackagePartCodegen extends MemberCodegen<JetFile> {
         }
     }
 
-    @Override
-    protected void generateSyntheticParts() {
-        generatePropertyMetadataArrayFieldIfNeeded(packagePartType);
-    }
-
     @Override
     protected void generateKotlinAnnotation() {
         writeKotlinSyntheticClassAnnotation(v, KotlinSyntheticClass.Kind.PACKAGE_PART);