fix for PArrayIterator buitlins

Author: lukasstadler

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/iterator/IteratorBuiltins.java

@@ -55,7 +55,7 @@
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.profiles.ValueProfile;
 
-@CoreFunctions(extendClasses = PythonBuiltinClassType.PIterator)
+@CoreFunctions(extendClasses = {PythonBuiltinClassType.PIterator, PythonBuiltinClassType.PArrayIterator})
 public class IteratorBuiltins extends PythonBuiltins {
 
     /*