Fix pickling ddrescue State()

scripts/wk/clone/ddrescue.py

@@ -171,6 +171,12 @@ class BlockPair():
     # Set initial status
     self.set_initial_status()
 
+  def __getstate__(self):
+    """Override to allow pickling ddrescue.State() objects."""
+    bp_state = self.__dict__.copy()
+    del bp_state['view_proc']
+    return bp_state
+
   def get_error_size(self) -> int:
     """Get error size in bytes, returns int."""
     return self.size - self.get_rescued_size()