Add missing ecma_free_value to opfunc_init_class (#3626)

This patch fixes #3625.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/vm/opcodes.c

@@ -976,6 +976,7 @@ opfunc_init_class (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
     }
     else
     {
+      ecma_free_value (proto_parent);
       return ecma_raise_type_error ("Property 'prototype' is not an object or null");
     }
 

tests/jerry/es2015/regression-test-issue-3625.js

@@ -0,0 +1,27 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var Base = function() {}.bind();
+Object.defineProperty(Base, 'prototype', {
+    get: function() {
+        return Int8Array + Function
+    }
+});
+
+try {
+  class C extends Base {}
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}