[gnome-music/wip/mschraal/texturecache-memory-size-improvements: 3/9] coverpaintable: Smarter reset on coreobject change

[Marinus Schraal <mschraal src gnome org>]

commit b2cf46da17abda696979c5d2ba5b7123a73635a9
Author: Marinus Schraal <mschraal gnome org>
Date:   Sun Apr 17 11:58:05 2022 +0200

    coverpaintable: Smarter reset on coreobject change

 gnomemusic/coverpaintable.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/coverpaintable.py b/gnomemusic/coverpaintable.py
index d4ac2a539..4519e6680 100644
--- a/gnomemusic/coverpaintable.py
+++ b/gnomemusic/coverpaintable.py
@@ -152,8 +152,9 @@ class CoverPaintable(GObject.GObject, Gdk.Paintable):
 
         self._texture_cache.clear_pending_lookup_callback()
 
-        self._texture = None
-        self.invalidate_contents()
+        if self._texture:
+            self._texture = None
+            self.invalidate_contents()
 
         if self._thumbnail_id != 0:
             self._coreobject.disconnect(self._thumbnail_id)