Cannot free chache space due to sqlite row assignment error (#46)

src/earthkit/regrid/utils/caching.py

@@ -373,13 +373,10 @@ def _delete_entry(self, entry):
             except OSError:
                 pass
 
-        if entry["size"] is None:
-            entry["size"] = 0
-
-        path, size = (
-            entry["path"],
-            entry["size"],
-        )
+        path = entry["path"]
+        size = entry["size"]
+        if size is None:
+            size = 0
 
         # path, size, owner, args = (
         #     entry["path"],