Merge pull request #524 from TackYs/develop

int cast in add_dummy_markers to comply with blender python 3.1+

Author: HENDRIX-ZT2

io_scene_niftools/modules/nif_export/animation/__init__.py

@@ -201,4 +201,4 @@ def add_dummy_markers(self, b_action):
             NifLog.info("Defining default action pose markers.")
             for frame, text in zip(b_action.frame_range, ("Idle: Start/Idle: Loop Start", "Idle: Loop Stop/Idle: Stop")):
                 marker = b_action.pose_markers.new(text)
-                marker.frame = frame
+                marker.frame = int(frame)

io_scene_niftools/modules/nif_import/animation/__init__.py

@@ -58,7 +58,7 @@ def __init__(self):
     @staticmethod
     def get_controller_data(ctrl):
         """Return data for ctrl, look in interpolator (for newer games) or directly on ctrl"""
-        if ctrl.interpolator:
+        if hasattr(ctrl, 'interpolator') and ctrl.interpolator:
             data = ctrl.interpolator.data
         else:
             data = ctrl.data