Ensure that ecma_get_number throws error for symbol values. (#2744)

This patch fixes #2743.

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

tests/jerry/es2015/regression-test-issue-2743.js

@@ -0,0 +1,24 @@
+// 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 v1 = Object(Symbol("symbol"))
+var v2 = new RegExp();
+var v3 = new Array(v1)
+
+try {
+  var v4 = v3.forEach(function(p_0, p_1, p_2) { return p_0 + p_1 + p_2; }, v2);
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}