Tracking: Fix missing checks in operator poll functions

Reported by Vuk Gardašević (lijenstina) in IRC, thanks!

1 files changed, 6 insertions, 1 deletions

diff --git a/release/scripts/startup/bl_operators/clip.py b/release/scripts/startup/bl_operators/clip.py
index d8ef9e1f3ef..f63b0495d02 100644
--- a/release/scripts/startup/bl_operators/clip.py
+++ b/release/scripts/startup/bl_operators/clip.py
@@ -210,7 +210,7 @@ class CLIP_OT_set_active_clip(bpy.types.Operator):
     @classmethod
     def poll(cls, context):
         space = context.space_data
-        return space.type == 'CLIP_EDITOR'
+        return space.type == 'CLIP_EDITOR' and space.clip
 
     def execute(self, context):
         clip = context.space_data.clip
@@ -254,6 +254,11 @@ class CLIP_OT_track_to_empty(Operator):
         constraint.object = tracking_object.name
         constraint.camera = CLIP_camera_for_clip(context, clip)
 
+    @classmethod
+    def poll(cls, context):
+        space = context.space_data
+        return space.type == 'CLIP_EDITOR' and space.clip
+
     def execute(self, context):
         sc = context.space_data
         clip = sc.clip