Fix regression that broke merging metadata for some books

This commit is contained in:
Kovid Goyal 2023-10-06 11:53:01 +05:30
parent b2b885117b
commit d463f34b7b
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@ -3257,6 +3257,7 @@ class Cache:
if not dest_value:
dest_value = src_value
else:
dest_value = list(dest_value)
dest_value.extend(src_value)
self._set_field(field, {dest_id: dest_value})