avoid unsupported sys.getrefcount in unittests

Author: qunaibit

graalpython/lib-python/3/ctypes/test/test_internals.py

@@ -1,7 +1,10 @@
 # This tests the internal _objects attribute
 import unittest
 from ctypes import *
-from sys import getrefcount as grc
+try:
+    from sys import getrefcount as grc
+except:
+    pass # Truffle change
 
 # XXX This test must be reviewed for correctness!!!
 

graalpython/lib-python/3/ctypes/test/test_python_api.py

@@ -9,7 +9,10 @@
 
 ################################################################
 
-from sys import getrefcount as grc
+try:
+    from sys import getrefcount as grc
+except:
+    pass # Truffle change
 if sys.version_info > (2, 4):
     c_py_ssize_t = c_size_t
 else: