fixed typo with freeing the store memaddr

binarycpython/utils/grid.py

@@ -1801,7 +1801,7 @@ class Population:
             1,
         )
         # free store memory:
-        binary_c_bindings.free_store_memaddr(self.grid_options["_store_memaddr"])
+        _binary_c_bindings.free_store_memaddr(self.grid_options["_store_memaddr"])
 
         # Return a set of results and errors
         output_dict = {