Fix a few small issues in generators (#3919)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/es.next/generator-throw.js

@@ -69,7 +69,7 @@ check_result(f.throw("throw"), "z", false)
 check_throw("f.next()", "throw")
 check_result(f.next(), undefined, true)
 
-function* gen3() {
+function/* generator */*/* generator */gen3() {
   try {
     return 8
   } finally {
@@ -80,3 +80,15 @@ function* gen3() {
 f = gen3()
 check_result(f.next(), 1, false)
 check_throw("f.throw(2)", 2)
+
+function
+  /* generator */
+  *
+  /* generator */
+  gen4()
+{
+}
+
+f = gen4()
+check_result(f.next(), undefined, true)
+check_throw("f.throw('Str')", "Str")

tests/test262-es6-excludelist.xml

@@ -43,7 +43,6 @@
   <test id="built-ins/Function/StrictFunction_restricted-properties.js"><reason></reason></test>
   <test id="built-ins/GeneratorFunction/instance-restricted-properties.js"><reason></reason></test>
   <test id="built-ins/GeneratorPrototype/next/context-constructor-invocation.js"><reason></reason></test>
-  <test id="built-ins/GeneratorPrototype/throw/from-state-completed.js"><reason></reason></test>
   <test id="built-ins/Map/prototype/Symbol.iterator.js"><reason></reason></test>
   <test id="built-ins/Number/15.7.4-1.js"><reason></reason></test>
   <test id="built-ins/Number/prototype/S15.7.3.1_A2_T1.js"><reason></reason></test>