Small fixes

test_pyenvlib.py: it is sys.exit(), not exit()
pysource.py: reinstate nod type of async_func_call

test/test_pythonlib.py

@@ -169,13 +169,13 @@ def do_tests(src_dir, obj_patterns, target_dir, opts):
           main(src_dir, target_dir, files, [],
                do_verify=opts['do_verify'])
         if failed_files != 0:
-            exit(2)
+            sys.exit(2)
         elif failed_verify != 0:
-            exit(3)
+            sys.exit(3)
 
     except (KeyboardInterrupt, OSError):
         print()
-        exit(1)
+        sys.exit(1)
     if test_opts['rmtree']:
         parent_dir = os.path.dirname(target_dir)
         print("Everything good, removing %s" % parent_dir)

uncompyle6/semantics/pysource.py

@@ -408,6 +408,7 @@ class SourceWalker(GenericASTTraversal, object):
                         self.template_engine(('%c(%P)', 0,
                                               (1, -4, ', ', 100)), node)
                         self.prec = p
+                        node.type == 'async_call_function'
                         self.prune()
                     self.n_async_call_function = n_async_call_function
                     self.n_build_list_unpack = self.n_build_list