8322282: Incorrect LoaderConstraintTable::add_entry after JDK-8298468

Reviewed-by: coleenp
Backport-of: bde650f21e2fa2f7730d3f948105159762e4fdd0

Author: shipilev

src/hotspot/share/classfile/loaderConstraints.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -387,7 +387,7 @@ bool LoaderConstraintTable::add_entry(Symbol* class_name,
   } else if (pp1 == nullptr) {
     pp2->extend_loader_constraint(class_name, loader1, klass);
   } else if (pp2 == nullptr) {
-    pp1->extend_loader_constraint(class_name, loader1, klass);
+    pp1->extend_loader_constraint(class_name, loader2, klass);
   } else {
     merge_loader_constraints(class_name, pp1, pp2, klass);
   }